February 4, 1999
Port: Tracy Gregg Starboard: Scott White Pilot: R. Waters

Time Depth (m) xy Heading Observations
0859 1200 Maurice Dance started
0901.30 Maurice Dance completed
0943 We just turned the VCRs on the cameras. Starting to see the bottom but we're having some nav problems so we don't know exactly where we are but we know where we're going, which is launch point 1.
0944 2664 We're flying over broad lobate terrain. Looks like we're flying over broad lobate terrain with vertical relief of, oo, geez, less than 50cm and mostly less than 10 cm. Lobes are about 3m across. I see a stalked crinoid out my window. Very glassy, a dusting of sediment. I'd say this is about age 1. Bob's cruising down to the bottom, hopefully able to pick up a rock somewhere.
0945 2668 110 There are rare collapse pits. They look like collapses in individual lobes. Lobes are slightly decorated but mostly just broad and bulbous.
0946 2671 110 Bob's settling down and he's going to grab a little lobate bud. Meanwhile I'm looking out my window at broad, glassy lobates that are abutting up next to the wall of a collapse. Within the collapse wall I see a hole. A hole that's about 1m tall and about a meter wide, and the hole's got bathtub rings in it. The wall itself is mostly a talus slope, I can't really see any primary structure on that, but I'm gonna get some pictures and some video for practice out here.
0948 Bob's working on the sample. I just turned on the port camera with a 15 s rep rate since we're still moving around, but once we stop moving I'm gonna turn it to 60s, and that's what I'm gonna try to do: 60s when we're stopped; when we're moving, 15s.
0950 We've settled down and I took the first 2 still shots out the window. Hopefully they'll pick up that collapse feature that I can see, but it doesn't show up on the video, unfortunately-it's just too far out there.
0954 Bob's swung around to try to get a chunk of rock off a wall and I see an anemone, 2 anemones, and I just saw a white shrimp with a pink head about 10-12 cm long squirreling along just outside my window. So this looks like-wow, this is stunning. The lobate flows are ponded against a collapse feature and so in the wall of the collapse it looks to me like we're getting a cross section of multiple thin sheet flows. They're flowing down the wall, but of course that's probably just a function of the way the wall looks. The thickness of individual units and they do in some cases look like units, not just bathtub rings. I see one out my window that's about 25-30 cm thick and there are others that are only 5-7 cm thick. And on top, it looks like the whole thing is coated by a folded lava that may have flowed, well, realize the perspective problem, but it looks like it was flowing towards me, toward the port side of the submarine.
1006 2671 136 We just got a sample. Sub is facing 136. Still have bad nav. We're going to head now to way point 2 because we are close enough to way point 1 that we don't really need to worry about it, keeping our eyes open for channels. Bob's gonna try to swap the baseline to see if we can get some better nav.
1006 We're rising above the ground, and as we're doing so we're coming up out of this pit and I can see that the top wall was in fact a series of folded sheet flows, very narrow short-lived channels that apparently just flowed down that wall. I think the sample that Bob collected was part of the levee region of one of these very small little channels, these small, about 2m across and maybe 15m long. They grade right out of these lobate flows although they look somewhat stratigraphically on top.
1008 Heading to way point 2. We're flying over broad lobates that are starting to get a little bit broken up in places due to localized collapse. I'm seeing collapses that are only about 20 cm deep and on the scale of the individual lobes. Again, the lobes are 1-3m across with vertical relief of 50-70cm where I can see the edge of an entire lobe, and where 2 lobes come together the vertical relief is only about 30 cm. Still very glassy, dusting of sediment, I would say age 1.
1010 2668 3094, 6612 Still flying over the broad lobates. Lots of collapse now. Again, collapse on the scale of 5-7m across and only 50cm or so deep. They just look like individual lobes. We're heading into larger collapse region right now with sheet flows. What do you see out your side, Scott? To me this looks like a channel right below? Nope? OK. So it was a localized thing.
1015 3085, 6501 I think I see a small long clump of spaghetti worms out my window. OK Scott, on my side I'm coming over a flat channel right now, a narrow one. What do you see on your side? [looks like lobates]. OK, so this channel is about 3-4m wide, and apparently only about 10m long.
1015 3077, 6478 Still flying over sedimented lobate terrain with rare collapse and occasionally a very decorated lobe. Some of the collapses appear to contain channeled sheet flows on the floors. There are many small holes in the lobates. Small on the order of 10's of cm. You can see that these lobes are largely hollow but many of them just haven't collapsed yet.
1020 3041, 6393 Spotted our first channel and Bob's sortof coming up over on it. Margins are lineated; interior is very platy, heavily wrinkled. It looks pretty narrow to me. Do you think you can see the other side of it Bob? [Yeah, do you wanna look out here?] Please.
1022 3028, 6371 We just flew over some beautiful wrinkled, folded sheet flow, beautiful draped curtain folds and it looks like we're coming up to another channel; this is nice and flat in the middle. Ohmigosh, hold on, this looks like a good one! This looks like a good one. It's wider than the other one was, and it's striated in the middle. Flat-this looks pretty good to me. And isn't that interesting; stratigraphically it is under the lobates out my window. I see a large lobe that has flowed onto the lineated channel. Lots of marginal shear zones. OK.
1024 2670 3013, 6348 We found a fairly flat, lineated channel. Lineations look like migrating shear zones that we're going to try to follow. Bob is taking a sample off the edge of the channel. The channel levees are marked by collapse. The margins look somewhat lobate and the interior of the channel has collapsed, sortof piecemeal down, sot that the margins of the channel are these hollow lobate things. And it's one of these hollow lobate things that Bob's trying to get a piece of. I'm going to pause and try to get some video and some pictures here.
1027 2671 3012, 6347 Stopping for a sample.
1036 2669 3014, 6348 Bob successfully collected a big mamma rock and put it in the sample basked #7. We are now motoring to the west to follow this channel. Now this channel has very little relief to it. We've told him whenever he sees an opportune time to pull a sample off the middle of this flat, somewhat lineated channel, to do so. There's a stalked crinoid right out my window. Wow, what is right in front of me? There's a big collapse right in front of me. Are you looking down a big hole? [Yeah] Cool. Bob's looking out the window into a big hole lined with a fairly flat sheet flow with large curtain folds, sortof draped through it; I can't see it real well. I would say that this, I'm, the back of the sub is basically sitting on these lobate flows and the front of the sub is hanging over this 5m-deep-hole. Rubble on the sides, some bathtub rings, floored with sheet flows. Wow. The folds are very chaotic, but it does look like the general flow direction of this particular collapse is to the west, which is encouraging.
1040 2996, 6339 We went west down that channel and it sortof ended. So we're gonna turn back around through the cloud of dust and see what happened to that channel.
1045 3020, 6349 We've sortof come back to the channel that we originally sampled. We did pass out of it and we kinda turned around after passing over this big collapse pit and came back to it. And we've told Bob that we wanna center this channel and follow it in a westerly direction. There's a lot of dust though so we might have to sit here for a minute.
1048 We followed this channel for about 5 m, and it's kindof coming up and it looks like its dumping us to the edge of a collapse pit. [This seems like what we did last time.]
1049 We followed the channel for a little bit an it goes into a collapse pit, so I've asked Bob to kindof nudge out and see if we can see the other side of the collapse pit. I wanna see as we go into the collapse pit if I can see if this flow has come out of the collapse pit, flowed into the collapse pit, or if the source might be in this collapse pit. The source is IN the collapse pit.
1053 2672 227 Bad xy Heading 227 and changing. We've asked Bob to turn south, we're going to try to find another channel. I am over chaotically folded sheet flows. Enormous folds with amplitudes of 10cm or more an wavelengths up to 50 cm. It's just this mass of folded flows as far as I can see. Whaddya got out your side? [Same thing].
1055 2674 2977, 6319 We're flying over this chaotically broken up folded sheet flow. I've asked Bob to stop and try to pick up a piece of this stuff. It's gonna be pretty breakable so we'll see what happens.
1106 There's some possible battery problems. We might be down to one battery; we might have to. Well, I'll let someone else do the technical difficulties. We're rising up off this jumbled sheet flow and we asked Bob, because of those potential difficulties, to just head to way point 3 which is a pillow mound that we believe is west of the contact. So we're gonna just follow west, see what happens to this jumbled flow. I've asked Bob to keep an eye out, to kindof shout out any morphologic changes that he sees. If we have time, and things are going well, we'll ask him to take a sample at these morphologic transitions. If not, we'll just keep flying. As much as I like rocks, I feel like it's more important for us to map this stuff than it is to take samples, so there we are.
1107 Bob says we're going upslope as we go west. Out of my ­holy shhh-I see the wall of a collapse pit covered with bathtub rings. The thing is about 15m tall. So that's what we were in. I think we're slowly climbing out of it. There's a brittle star, more collapses, bathtub rings, an anemone, crinoid. Lots of collapse in here. This stuff is just jumbled, messed up stuff. Now we're heading into lobates now.
1108 2670 305 Came up out of the collapse, out of that chaotic terrain, and we're back into friendly lobates, age 1 again.
1109 Still a bad xy. Collapse pit about 20m across, and 5m deep out my window.
1110 2906, 6347 307 Flying over a large, irregular collapse pit. Actually, I see a couple lined up-might be a lava tube system. Crossing over a flat sheet flow that has flowed out of or into a collapse pit. Flowing, actually, it's flowing from one level of collapse, a collapse that's about 4m deep, and then dropping down into the floor of another collapse which is about 8m deep. Which we're flying over now. It's floored with lovely curtain-fold, swirled, flowing away from me, what direction are we facing 307. And there's some local jumbled stuff, some deep collapses. Geeminy Christmas, I can't even see the bottom of that sucker. No, I barely can, that means it's probably about 10m deep at it's deepest. Very chaotic here. All broken up. Talus, probably some autobrecciation.
You know, I think we're following a channel out my window. It's in a collapse.
1112 2839, 6391 There's a channel out my window; we've been following it since we hit that collapse
1113 I think I lost that channel, I think there's a ridge between me and it.
We just passed from all sorts of chaotic jumbled stuff to a very nice flat sheet flow. Looks like a nice channeled flow to me. Can you see it heading out in front of you? [yup]. Can you follow it for a little ways?
2813, 6404 We're following this sheet channel now. Scott's got the margin on his side, I've got the margin on my side. It's flat in the middle. It's in the middle of a collapse so the far margins are very jumbled. The near margins are slight lineations and wrinkles sloping upward away from me.
1115 2791, 6427 Followed that flat sheet channel for about 50 m and then it all sloped up all around so we're giving up on that and heading back to way point 3.
1116 2789, 6429 Came up out of where that flat sheet flow ended and now we're flying up over this hackly, jumbled, broken up stuff. Scott's got a sheet flow on his side; I've just got broken up stuff.
1118 2789, 6429 I now suddenly have lobate, broad, lobate flows, veery, very, very very very broad. I see one lobe that is at least 25m long and about 4m wide. Most of them are wrinkled on the surface. Vertical relief of about 70 cm. Very broad lobate flows. Some of them are 10 m wide.
1120 2701, 6407 Flying over what looks like classic subaerial pahoehoe. There was a lobe with a lot of folds in it. I see an anemone. Slightly heavier sediment than we've been seeing, but it may be because we're flying a little bit higher up than we've been and I'm just getting a different perspective. I'd still call these age 1, maybe 1.5. Nah, not even 1.5. There are very, very small pockets of sediment collected in the cusps of the lobes. These are pretty bulbous lobes. And they are flowing, they tend to be elongate in the direction we're traveling, that's good; they tend to be elongate to the west. Some wrinkles on 'em.
1123 2677 259 Bad xy, heading 258.5. Flying over lobes with vertical relief of up to 70-80 cm. Oh I just flew over my very first striated pillow. It's got buds coming out of it. Big bulbous pillows. Vertical relief of about a meter. Some of these pillows are 2-3m. They are interspersed with the lobes.
1124 I'm seeing some little pockets of white staining. Oh, lots of pockets of white staining. Maybe they're not staining, maybe they're spaghetti worms. [No, it looks like staining]. On the pillows and on the lobes. This is not what I expected. It's very obvious in some of the cracks on the pillows. The white staining is outlining cracks. I see collapses. Lots of white staining. That's very surprising to me. Looks to me like the sediment cover's a little bit heavier too.
1127 2681 257 Bad xy. Heading 257. Flying over these lobes. We passed over a small field of pillows but they're gone now. The sediment cover seems to be a little bit heavier. I'd still call these age 1, maybe 1.5 and it's still very glassy but what's intriguing here is all the white staining in the cracks. So I've asked Bob if he sees an opportune spot to try to take a sample. I don't want to spend a lot of time doing that because of the battery problems, unless there's an opportune spot. It's very interesting to me that there's all this staining out here. There's just the normal biota out here. A rare anemone, a crinoid, something like that. I mean, rarely. I'm looking out my window and in my entire field of view I see nothing.
1129 2683 2484, 6334 259 Got a potentially good fix. I think that's about right. Heading 259. We're still over these lobates. They're smaller lobates, and the white staining is far less prevalent out here, but still peeks out an occasional crack. Collapses are very rare, so I don't know that we're going to stop to get a sample here. Oh, look, a pillow, a true, striated pillow! If the battery turns out okay we'll sample on the way back. John's probably gonna kill me for saying that.
1133 2688 2436, 6320 279 We're in a field of lobes and pillows. The pillows are nicely budded. There is sediment out here. Again I would say age 1, 1.5, but still glassy, even the pillow buds are still intact. And rare, white staining still. Not as common, but I'm looking out my window, and there's this little poop, looks like a bird poop, but it's white hydrothermal staining sitting on top of this lobe.
1143 2425, 6316 Just took a sample in these budded lobates intermingled with pillows, and we've asked Bob to continue onto way point 3. We're going to look for the contact for the end of this age 1, 1.5 lava flow, where it abuts with the older terrain. And I hope we can see it.
1145 2415, 6311 We're out of lobate terrain, an coming into broken up, hackly sheet flow again. Jumbled, broken up folded flow. I still see hydrothermal staining in the intermingled pillows. Again, glassy, sediment cover again about age 1, 1.5 There's one of these lava channels. This is not the contact I was expecting.
1146 2690 2401, 6306 256 There's a large depression off out my side, I can't see the other side of it. This is another one of these lava channels that we've come back into. Scott sees collapse off his side. I see jumbled sheets in the depression. I think this is a jumbled channel that we've suddenly stumbled across.
1147 2375, 6295 243 We're heading to way point 3 but we've stumbled upon this depression. I think this is a jumbled channel. I asked Bob to tweak a little bit so we're sortof flying down it. It's definitely broken up folds. It's interesting that its in a depression. It's very chaotic, I can't get any concept of a flow direction from this thing. And I cannot see the other side of it, which means that it's more than 20m wide.
1149 2692 240 Bad xy. There's a small patch of smooth sheet flow but it's very localized. This is great, this is just like what happens on land, this is great. There's this smooth patch in the middle of this broken up flow.
1151 2693 2344, 6273 261 We're stopped in this jumbled broken up sheet flow. Scott's pretty sure we're pretty close to the margin on his side. We are about a kilometer from the axis, from the center of the axis. So I've asked Bob to stop and take a sample of this jumbled stuff. It's intriguing to me that it's so broken up this far from the axis. So I was gonna grab a chunk of this jumbled stuff and then we'll move on to way point 3.
1154 2691 2354, 6273 Lifting up after collecting a sample of this jumbled sheet flow. Heading onto way point 3. What is that? There's a small patch of white staining outside my window. Isn't that nice?
1159 2691 2263, 6271 Flying about 4m off the bottom and it's jumbled as far as I can see. You too Scott? Scott thinks he's flying over some sort of drop-off, but just as far as I can see, it is jumbled, broken up folded stuff. There is sortof an undulating wavelength to this whole thing. There are sort of dips and swells on the scale of 3-4 m broad with vertical relief probably about 2m up and down some of these swells. God, the mesotech's gonna be really cool on this.
1201 2236, 6268 Still in this jumbled stuff, but Bob says we're climbing up. We're climbing up a ridge. It's still jumbled sheets but we're going up. In the last minute I have seen 2 stalked crinoids out my window. Still glassy, sediment cover is fairly continuous even in this rough terrain. Age 1.5, I think I would call it. No real pockets, but there's a lot of topography out here, on the scale of 3-4 m.
1207 2694 2119, 6225 272 We are still in jumbled sheet flows as far as the eye can see. About 2 minutes ago I saw 2 of those big-headed fish; I've never seen 2 together before. And here's a stalked crinoid out my window now. Still glassy lavas. Definitely broken up folded flow; you can see the individual folds. Lots of dips and swells in this jumbled flow. But pretty uniformly covered in sediment. Age 1.5. If it weren't for the glass, I'd say this sucker was old old old because of the uniform sediment coating on it. But the glass is clearly shining through the sediment so I think It's all the same stuff. I think we've been in the same age lava since we landed. And there's a zoercid out my window. And a stalked crinoid.
1208 Scott says out his window it's jumbled as far as his eye can see too.
1212 2697 2016, 6214 279 Just passed 2 stalked crinoids and a holothurian out my window. I have no idea what they think they're eating. There's another stalked crinoid.
1214 2699 279
1215 We notice, now that we've been flying over this jumbled thing for a while, there are variations, little variations in the jumbled flow. There are variations in the ­what is that? It looks like a sea urchin about 15 cm across. There are regions where there are small fragments, larger fragments, places where it looks really broken up, places where I can see slicken-slide textures, places where it looks like the lava has coiled up and clotted-cauliflower clots. I see an anemone and a stalked crinoid. I'm not sure what that means, what the patterns in fragment size are trying to tell us. But there are regions where it doesn't look like a broken-up folded flow, where it just looks like someone took a hammer to it and smashed the heck out of it. 2 stalked crinoids out my window.
1218 2699 1893, 6235 Looking out my window right now we are in bulbous pillows and lobates. OK, anywhere you can get a sample, Bob, and then we'll want to turn around and get a sample of that jumbled stuff. OK? Great.
1221 2701 1866, 6235 We asked Bob to stop because we thought we were at the end of this jumbled stuff, and we weren't. It looked like just a local squeeze-out of lobes, and locally the lobes were on top of the jumbled stuff. I did see some pillows. The lobates look like they're the same age, too. They're glassy, they're covered with sediment. Same kind of stuff so I asked Bob to continue west until we are sure we up on this mound that we see in the SeaBeam and in the sidescan, and then we'll pause.
1223 1852, 6241 Scott sees lobate out his side, Bob says it's getting smooth out front; I'm seeing jumbled on my side. Really contorted. I think the jumbled stuff still going on. You see a fissure over there?
1223 1832, 6248 I think we're on the margin of this channel, right here. It was jumbled, then we passed over some smooth terrain. Is that lobates over there? [I see right in front of me the same jumbled stuff and right next to it I see lobates] I see lineated sheets out my side.
1227 2711 1798, 6297 Settling down on the floor to get a sample. It's on a sheet flow. A smooth sheet flow, but it's still--the contact between this and the jumbled stuff is gradational, so it's all part of the same distributary system. There's some broken up folds, I guess, that are in front of the sub that we're gonna get a piece of. Out my window, we're looking at some beautiful lineations and some lava roses; they're sure nice.
1239 2711 1777, 6287 199 Bob just picked up a sample of the margin of the sheet flow we've been following, the jumbled sheet flow, although here where he picked it up it was more smooth an wrinkled. We're heading up now and what we're going to do is try to follow this jumbled channel system to the west until it ends. We're just going to keep trying to follow along it 'til it ends. As long as it's still kinda heading west.
1241 1757, 6285 Still following this jumbled system. Here, it looks very much like broken up folds. Same sediment cover, the occasional stalked crinoid. Same dips and swells. Same SOS.
1242 Localized little plop of lobes; its apparently about twice the length of the sub. Sub's 18 ft, 6m, so that's about 12m across.
1244 1721, 6292 Stalked crinoids out my window and there's lobes over me. What do you see over there Scott? [Jumbled sheet flows] There's a little pile of lobes here, it's very local.
1245 We're sortof passing in and over local lobes, that seem to be more common. Although, farther out my window on the port side, it's still just jumbled. Locally the lobes have flowed over the jumbled material. So locally, the lobes are younger than the jumbled. However, they all seem to have the same sediment cover and the same glass, so I'm not convinced they're separate flows. It's just that locally the lobes came out last.
We're flying over a large lobe that's flowed on top of the jumbled. I see the margin of a collapse n the distance. Oh, look at this. They're syn-eruptive. Because right here, right below the sub, the lobes are on top of the jumbled, and 2 m off the port side they are under the jumbled.
1247 Bad fix. Jumbled flow intermingled with large lobes. The lobes are elongate, up to 20-25m long, and maybe 2-3m wide. All appears to be about the same age
1250 I see only lobes out my side, some decorated pillows. Scott, you see jumbled now? I see white hydrothermal staining locally on some of the lobate flows.
1251 1576, 6375 On my side it's all lobates, occasional pillows that are budded. Scott? OK, we're all in lobates? OK, ya wanna squeeze north and see if we can pick up that channel again? The channel may have finally just ended.
1252 1558, 6373 Scott sees jumbled on his side and out my side I see pillows. And there's a large drop-off about a meter away from the submarine, down to a depression that I can't see the other side of, which is floored with jumbled material. I think we're just on a little ridge here, Scott. Cuz there's a drop-off to nothing but jumbled [Yeah cuz there's a drop-off on my side with jumbled flows on the bottom of it] Yep, jumbled as far as I can see.
1254 2734 258 We're sortof coming in and out of some collapses here, but the collapses are only recognized by sortof rare pieces of talus with bathtub rings on 'em. I see one of those big white 6-feet long fish that just sit there and don't do anything. I don't remember what it's called but it's just sitting there not doing anything. Still jumbled, broken up.
1257 2734 1491, 6284 We're going uphill but we're still in this jumbled stuff. I haven't seen anything that looks even remotely like a contact. And we should've hit the pillows a long time ago. So if it gets to beOK
1301 2736 1412, 6261 We think we've finally come out of this jumbled flow into some older pillows. Although it's just slightly heavier sediment cover. There's buds over here! I think this is the same stuff. It's lobate, it's no longer jumbled, but it is maybe age 1.5, just slightly more sediment. Broad lobes, some decorations and some pillows. The pillows look, the pillows are really heavily sedimented. I think the pillows are older. You're right, OK, so the pillows are older with sediment on them. Right now there's a big pillow out my window but there's also these lobes out my window which is the same stuff that we've been flying over. Yeah, there are older pillows out here. Some of the buds are still there but there's definitely heavier sediment here.
1311 Bob just got a piece of that drained pillow. It's definitely an older lava, the pillows are heavily sedimented-I would say the pillows are age 2, 2.5. However I'm concerned that these pillows might just be a kipuka because I see out my side lobes that are glassy, sediment cover about what we've been seeing, age 1, 1.5. Although I think Scott said that he sees more pillows out his window. So anyway we know this is older stuff, but we don't know how extensive this older stuff is and this jumbled stuff may juts keep going. But It's after 1:00 and we might not stick around to find out.
1313 We're underway. Scott's pretty sure that the pillows that we sampled that that was the contact. That out his side, the pillows continue to the north. So we're now heading to the south, trying to go across this jumbled flow that we've been following. We're going to try to take as sample of it. We also wanna see how wide it is, and then we'll start heading east again.
1317 2737 1385, 6217 109 Heading 109 but it doesn't really matter because Bob is settling down on the bottom to find a place to grab a piece of this jumbled flow, which we've crossed back into. Our plan is to head south to try to determine how wide this jumbled region is, and then we'll head east again.
1322 2735 1388, 6212 Bob just got us a sample of the jumbled flow and slam-dunked it into the front basket. We're heading due south across the western portion of this jumbled flow. Lessee if we're heading south, I'm looking east and you're looking west. So keep your eyes peeled to see if you see anything that looks like an end. And we're just going to try to see how wide this jumbled flow is. It's certainly as far as the eye can see. If it looks like it's going to be too wide, we'll abort and start zigzagging our way up the slope. But I would like to see if we can get some dimensions on this.
1324 We're still heading south, passing into some lobes with large collapse pits, with collapses that are about 12m wide, 10-12m wide, and less than 1m deep. And it's lobates as far as I can see, so. Tweak it east a little bit and see if we can pick up that flow again. We still wanna head mostly south, but let's see if we can keep this flow in my view.
1326 2736 161 Lobes and we lost that jumbled sheet flow and we are definitely in age 2 pillows here. Some wonderful top-hat pillows here. The pillows are 1m across, 2m across and about a meter high. [You have pillows over there?] Yup, and they're old, age 2 stuff. [We must be on the contact then-I have lobates]. There's a very heavily sedimented pillow mound on my side. And I can see directly below me occasional fingers of the glassy lobes. Yes, there are elongate pillows on my side. I can see them flowing down a slope, towards, yeah there's a pillow mound out here. We're losing it, it's sortof behind us now. Nice pillow mound. Now we're back into the age 1.5 glassy lobes.
1328 2734 1412, 6117 Back in jumbled material. Let us turn east, an follow this jumbled material for a little while. My guess is we're pretty much due east from way point 4.
1329 2735 1389, 6168 Just gave the go-ahead to head toward way point 4. Scott sees jumbled flows out his side and out my side is a smooth, featureless sheet flow.
1331 2735 1449, 6107 88 Passing over jumbled material now with a lot of relief, a big drop-off to my side. Relief is probably about 6m. Back onto smooth sheets again.
1332 1426, 6206 Just came up a steep drop-off again. I think some of these are possibly tectonic. They're very steep and maybe they're bounding the channels. We're still over this jumbled sheet stuff and I have a feeling we're going to kindof follow it for a while. Oh, there's a collapse pit in the sheet flow. YES! It looks just like a skylight in this jumbled flow. It's about a meter in diameter in the bottom of a pit. The pit was about 6m across, total depth about another 6 m
1333 2732 1472, 6207 90 We are over lobes again. Broad lobes out of that jumbled stuff, so that'll give us some kind of constraint on the width of that channel. The lobes are narrow, not terribly-oh, there's jumbled again
1334 2732 1488, 6190 Some jumbled, so this is a sortof interfingering of jumbled and the lobes. Here the lobes are on top of the jumbled flow.
1334 1516, 6189 Interfingering of lobes and jumbled. Again the lobes seem to be on top of the jumbled. The lobes are about 1-2m across and up to about 10-12m long. They're elongate flowing downhill toward the jumbled which seems to be in a slight depression. But again it all seems to be the same age stuff.
1337 2730 1546, 6200 Settled down. Bob's gonna try to take us a paired sample: a chunk of jumbled and a chunk of lobate that are right next to each other.
1346 2728 We just finished collecting a paired sample: a lobate flow in contact with a jumbled flow near the end of this lava distributary system. We're still 2 km from the axis, nah, 1.5, whatever. Anyway, we're out here. I have asked Bob to proceed to way point 4 and we'll see what we can see.
1347 2724 Lobates interfingered with the jumbled. The jumbled here are below the lobes. And I see a sheet flow, and a fish. Some localized white staining. Mostly broad lobes.
1348 2719 1634, 6089 I'm passing over jumbled flow again, probably the same guy that we've been following along, and it's interfingered with these lobates. Here this patch is quite wide. It's broken up folded flows. The entire patch of lobes was about 3 sub-lengths, which is about 20 m.
1350 2715 1679, 6070 109 Passing over beautiful-oh, there's an orange shrimp that just went swimming by my window. Flying over lineated and jumbled sheet flows. And right on top of everything is this pillow that's about 6m long and about 50cm in diameter, squirting right over it. Nice lineated sheet flow flowing almost exactly away from me, and since we're going east oh here we go here's a lineated sheet flow. I think I just passed over a tumulus. There's a nice lineated sheet flow to the side of me.
1351 2709 1718, 6061 We just came across this sort of lineated sheet flow. I just asked Bob to plant the sub on it and try to follow it for a while. It's surrounded by lobate flows, I don't know how long it's gonna last, but we'll give it a shot.
1352 1719, 6061 The channel just went away.
1353 1745, 6054 Coming back into jumbled flow. Earlier Scott saw a little channel out his window. These little smooth channels seem to only last for about 25 to 50 m. I think they are smooth patches within the jumbled flow, like we see sometimes in Hawaii. I think jumbled flow is the dominant morphology for this distribution system, and the lobates are secondary here. The sheet flow channels that we're seeing I think are just localized concentrations of the flow. Just like we see in Hawaii: sometimes you get those smooth tongues in the a'a flows; I think that's what we're seeing. Stalked crinoids an some shrimp every once in a while.
1355 2705 1806, 6035 There are broad, 10-15m patches of smooth featureless lava within the jumbled. Oh, there's one of those big mother fish again. I wonder if it's the same one? Those big 6-ft-long fish with the huge eyes that just sit there and don't do anything. Sitting right at a contact between a smooth sheet flow and a jumbled flow. Anyway, I think these smooth patches don't go very far, just like we see on land. The prominent morphology here is this broken up jumbled stuff.
1356 2704 Bad xy. Just passing into a beautiful lineated sheet flow and now it's flat, some hydrothermal staining, some sediment. Oh there's one of those fish with legs out there. Tripod fish! Smooth, smooth sheet flow here. Very flat, very broad area of flat sheet flow. I wonder if this is a nice little lava pond here. Wow, this is really flat
1401 2695 2005, 5985 101 Jumbled sheet flow still. Broke up folds. Clasts are pretty good size, actually. Each individual piece is on the order of 10-50 cm, let's do that. Still the same old dips and swells, it's gotta be the same flow we came down on.
1406 2692 101 Still in the jumbled sheet flow. There's quite a bit of relief on this sheet flow, on the order of 6m or more. I think that the depressions are places where the lava flow was concentrated. Drained channels. Occasionally you can see stands of lava that has jagged edges that are somewhat canoe-shaped, on the order of 3m by 2m, in the middle of a depression-like the lava flowed around it perhaps to help shape it. However, none of terrain is as smooth as anything we'd see on land. Which means that either this lava flow was very short-lived and didn't have time to sculpt, or it could be that the nature of the crustal cooling didn't allow the lava to be sculpted. There are some deep pits, some of which may be skylights. Coming up onto more broken-up folds, with individual folds easily identified. Still quite chaotic and I can't get any sense of a flow direction off this thin, although where I think I know what I'm talking about, it seems like it's flowing towards the front of the sub. Which may be wishful thinking because I know we're heading in that direction.
1408 2691 Just passed over another skylight in the bottom of a collapse pit about a meter in diameter.
1408 2691 104 I see occasional broad--
1409 2686 We're now over lobes instead of jumbled sheet flows. Finally.
1411 2687 104 Passing out of the lobates and back into jumbled sheet flow. And here it looks like the lobes flowed on top of the sheet flow. Nice curtain folds, still intact on lava flowing obliquely towards me from the NE.
1411 Passing over a flat sheet flow that is locally folded. It's only about 10m or so before we pass back into the jumbled.
1413 2683 2394, 5889 Just passed way point 4 and we're going to zigzag across this lava distribution system to way point 5. Nice lineated sheet flow in the video, but I'm over jumbled flow with smooth sheet flow in the background.
1415 2682 2554, 5880 20 Just turned a corner, heading 20, to way point 5. We're trying to kindof zig our way across this flow. I don't know if we'll ever come out of it in this direction, but we'll see what we can see.
1417 2683 2475, 5937 23 Back into flat sheet flow, flat folded. Bob says it's back in the jumbled stuff. Yup, that flat stuff was all of about 15 m.
1420 2681 2505, 6020 16 Just passed over a nice pit, looked like a skylight in this jumbled sheet flow. Bottom of the pit was about 60-70m diameter.
1426 2681 17 We just came out of this jumbled sheet flow and into budded lobates, intermingled pillows. There are some budded pillows. Whaddya see out there Scott? [I just see a bunch of lobates. Do you think we're at the edge?] Bob, what do you see? [I just see lobates.] I see jumbled stuff out my window right now. Just came out of it, back into jumbled, out my window I see the contact between the jumbled and these broad lobes are actually feeding that jumbled flow. Holy shit how are we ever going to figure that out. At least right here, that's what it looks like. There's a broad lobe that came down, opened up into a little collapse, and it just spilled into a jumbled flow that kept going as far as I could see.
1429 2094, 6523 We are in lobes now, lobes and rare pillows.
1430 2677 We're turning around, and as we turn around I see a big drop-off on my side, relief about 5 m. There's rubble at the bottom. We're turning around to head south now back over this jumbled flow. We'll just see how far we can get. Hopefully we can get to the other side of it, get a good cross-flow profile an get a good idea of how wide it is. That may be all we get to do.
1432 2591, 6273 We're passing over a series of collapse pits. I just heard Scott say a "big collapse pit" so maybe I'm just getting the fingers at the margin. Filled with bathtub rings. The pits are about 3m deep. I don't see any pillars though. Just collapsed lobes. So I'm seeing lobes now. Seeing any jumbled Scott? [no]
1435 2680 2599, 6200 196 We lost the channel for a while, the jumbled stuff, but it's back out my window now. Scott, what do you have out your window? [jumbled] OK, so we're back in the jumbled.
1436 196 We're going to head SSW until we run out of time or until we get to the southern part of this jumbled stuff, whichever comes first.
1442 2680 184 Bad xy. Heading pretty much south over this jumbled sheet flow. Here's a localized flat region. Hopefully to get the southern boundary before we have to surface. I would really like to know how wide this is so we can compare it to the sonar. I see 2 anemone outside my window. A remnant of a collapse feature: a narrow, 0.5-m wide ridge that's got bathtub rings on it, and a little bit of lobes on the top. There's a big collapse on my side. [We have lobes straight ahead]. We just passed over a little ridge of lobates. Out my window I still see collapse. WOW, with an arch, and pillars holding it up. The wall is probably 2-3m high, with selvages, beautiful! As we come out of collapse-okay, now we're in a series of collapse pits.
1443 We're coming back into collapses. Lots of arches, pillars, narrow pillars. I see no more collapses out my side.
1452 We just collected a sample of this jumbled flow and we can't get a good fix so Bob's trying to figure out how to do that. And then we'll move on.
1500 2670 2443, 5776 We don't have much time left so we decided we're gonna head SSW trying to sortof parallel the 2700 contour along the axis, keeping our eyes open, seeing what we can see about the origin of some of these flows until we run out of time.
1502 2675 2575, 5959 Heading south along the axis. Lineated sheet flow, jumbled sheet flow, local lobes. Here it looks, wow, I can't really tell. Some places the jumbled are on top of the lobes, and some places the lobes are on top of the jumbled. Lobes are quite broad. Chaotically folded sheet flow. Really jumbled, but you can tell that it was folded and that the folds are broken up.
1503 Now we're mostly jumbled. Don't see lobes anymore.
1504 2578 188 Jumbled sheet flow but locally some of the folds are still intact, very chaotically folded. Twists and whorls are very common. Again, the amount of relief is probably up to 6m all totaled with the dips an swells in this jumbled sheet flows which we thought we'd come out of but obviously hadn't. Bob says he sees lobates in front. Let's keep going on this same heading though. I see lobates out my window. The jumbled flows are on top of the lobate flow but it looks like the lobate flows here are oozing out from beneath the jumbled flow. Locally jumbled, local lobes. Some of the lobes are quite large. And there's a pillow. Oh Great. There's a big fat budded pillow about 3m long and about 1.5 m high in the middle of the jumbled stuff. Lobes again abutting the jumbled.
1506 2679 Bad xy. Lobes now. All I see are lobes.
1507 2678 Bad xy. We're sortof interfingering between the lobes and sheets.
1508 2677 We're pretty much flying the contact between the lobate flows and the jumbled flows. Jumbled flows out the port side and lobate flows out the starboard side.
1509 2675 189 Only smooth sheet and jumbled flows-no more lobate flows.
1510 2579, 5777 Let's keep going this course, maybe another, oh, lessee, about 5 minutes--if we have that-and then turn west.
1513 2674 2576, 5750 193 I see jumbled sheets outside my window; Scott says he sees lobes. Actually right now I do see lobes out my window. OK, here they are. Wrinkled lobes, broad lobes, and a large couple of big fat pillows about 2m across and 3-4m long and they're on top of the jumbled flows. Jumbled flows are back again. So we must be flying the contact between the lobes and the jumbled.
1514 2670 2562, 5651 194 I see nothing but lobes now. Scott? [It looks like lobates]
1515 2661, 5645 I just asked Bob to turn due west because we're in pure lobates now. We'll just go down this slope here and see what we can find.
1518 2672 2489, 5623 272 Lobates, locally collapsed. Don't see that channel anymore.
1519 2673 2461, 5620 We are in a mixture of lobes and pillows, mostly lobes. Again, age 1 stuff, I think it's all the same stuff. I see local patches of white hydrothermal staining again, very localized. I've asked Bob to turn north in a last act before we have to surface to see if we can hit that jumbled flow again just to try to nail the southern extent of it.
1522 2675 2468, 5635 348 We're still in lobates, trying to see if e can find the rest of the channel. Entering some collapses here. A broad, shallow collapse here about 7-8m in diameter. Big collapses that are about 2m maybe even 3m deep with lineated sheet flows on the bottom of em. OK, that might've been it.
1524 2677 2460, 5635 347 I think we just nailed the southern end of this channel. OK, I think we've got it. Back in jumbled sheet flows.
1524 2435, 5788 Off bottom
1612.50 Starting Maurice Dance
1619 Maurice Dance is over
Dive 3345 February 4, 1999
Port: Tracy Gregg Starboard: Scott White Pilot: R. Waters
Time Depth (m) xy Heading Observations
0859 1200 Maurice Dance started
0901.30 Maurice Dance completed
0943 We just turned the VCRs on the cameras. Starting to see the bottom but we're having some nav problems so we don't know exactly where we are but we know where we're going, which is launch point 1.
0944 2664 We're flying over broad lobate terrain. Looks like we're flying over broad lobate terrain with vertical relief of, oo, geez, less than 50cm and mostly less than 10 cm. Lobes are about 3m across. I see a stalked crinoid out my window. Very glassy, a dusting of sediment. I'd say this is about age 1. Bob's cruising down to the bottom, hopefully able to pick up a rock somewhere.
0945 2668 110 There are rare collapse pits. They look like collapses in individual lobes. Lobes are slightly decorated but mostly just broad and bulbous.
0946 2671 110 Bob's settling down and he's going to grab a little lobate bud. Meanwhile I'm looking out my window at broad, glassy lobates that are abutting up next to the wall of a collapse. Within the collapse wall I see a hole. A hole that's about 1m tall and about a meter wide, and the hole's got bathtub rings in it. The wall itself is mostly a talus slope, I can't really see any primary structure on that, but I'm gonna get some pictures and some video for practice out here.
0948 Bob's working on the sample. I just turned on the port camera with a 15 s rep rate since we're still moving around, but once we stop moving I'm gonna turn it to 60s, and that's what I'm gonna try to do: 60s when we're stopped; when we're moving, 15s.
0950 We've settled down and I took the first 2 still shots out the window. Hopefully they'll pick up that collapse feature that I can see, but it doesn't show up on the video, unfortunately-it's just too far out there.
0954 Bob's swung around to try to get a chunk of rock off a wall and I see an anemone, 2 anemones, and I just saw a white shrimp with a pink head about 10-12 cm long squirreling along just outside my window. So this looks like-wow, this is stunning. The lobate flows are ponded against a collapse feature and so in the wall of the collapse it looks to me like we're getting a cross section of multiple thin sheet flows. They're flowing down the wall, but of course that's probably just a function of the way the wall looks. The thickness of individual units and they do in some cases look like units, not just bathtub rings. I see one out my window that's about 25-30 cm thick and there are others that are only 5-7 cm thick. And on top, it looks like the whole thing is coated by a folded lava that may have flowed, well, realize the perspective problem, but it looks like it was flowing towards me, toward the port side of the submarine.
1006 2671 136 We just got a sample. Sub is facing 136. Still have bad nav. We're going to head now to way point 2 because we are close enough to way point 1 that we don't really need to worry about it, keeping our eyes open for channels. Bob's gonna try to swap the baseline to see if we can get some better nav.
1006 We're rising above the ground, and as we're doing so we're coming up out of this pit and I can see that the top wall was in fact a series of folded sheet flows, very narrow short-lived channels that apparently just flowed down that wall. I think the sample that Bob collected was part of the levee region of one of these very small little channels, these small, about 2m across and maybe 15m long. They grade right out of these lobate flows although they look somewhat stratigraphically on top.
1008 Heading to way point 2. We're flying over broad lobates that are starting to get a little bit broken up in places due to localized collapse. I'm seeing collapses that are only about 20 cm deep and on the scale of the individual lobes. Again, the lobes are 1-3m across with vertical relief of 50-70cm where I can see the edge of an entire lobe, and where 2 lobes come together the vertical relief is only about 30 cm. Still very glassy, dusting of sediment, I would say age 1.
1010 2668 3094, 6612 Still flying over the broad lobates. Lots of collapse now. Again, collapse on the scale of 5-7m across and only 50cm or so deep. They just look like individual lobes. We're heading into larger collapse region right now with sheet flows. What do you see out your side, Scott? To me this looks like a channel right below? Nope? OK. So it was a localized thing.
1015 3085, 6501 I think I see a small long clump of spaghetti worms out my window. OK Scott, on my side I'm coming over a flat channel right now, a narrow one. What do you see on your side? [looks like lobates]. OK, so this channel is about 3-4m wide, and apparently only about 10m long.
1015 3077, 6478 Still flying over sedimented lobate terrain with rare collapse and occasionally a very decorated lobe. Some of the collapses appear to contain channeled sheet flows on the floors. There are many small holes in the lobates. Small on the order of 10's of cm. You can see that these lobes are largely hollow but many of them just haven't collapsed yet.
1020 3041, 6393 Spotted our first channel and Bob's sortof coming up over on it. Margins are lineated; interior is very platy, heavily wrinkled. It looks pretty narrow to me. Do you think you can see the other side of it Bob? [Yeah, do you wanna look out here?] Please.
1022 3028, 6371 We just flew over some beautiful wrinkled, folded sheet flow, beautiful draped curtain folds and it looks like we're coming up to another channel; this is nice and flat in the middle. Ohmigosh, hold on, this looks like a good one! This looks like a good one. It's wider than the other one was, and it's striated in the middle. Flat-this looks pretty good to me. And isn't that interesting; stratigraphically it is under the lobates out my window. I see a large lobe that has flowed onto the lineated channel. Lots of marginal shear zones. OK.
1024 2670 3013, 6348 We found a fairly flat, lineated channel. Lineations look like migrating shear zones that we're going to try to follow. Bob is taking a sample off the edge of the channel. The channel levees are marked by collapse. The margins look somewhat lobate and the interior of the channel has collapsed, sortof piecemeal down, sot that the margins of the channel are these hollow lobate things. And it's one of these hollow lobate things that Bob's trying to get a piece of. I'm going to pause and try to get some video and some pictures here.
1027 2671 3012, 6347 Stopping for a sample.
1036 2669 3014, 6348 Bob successfully collected a big mamma rock and put it in the sample basked #7. We are now motoring to the west to follow this channel. Now this channel has very little relief to it. We've told him whenever he sees an opportune time to pull a sample off the middle of this flat, somewhat lineated channel, to do so. There's a stalked crinoid right out my window. Wow, what is right in front of me? There's a big collapse right in front of me. Are you looking down a big hole? [Yeah] Cool. Bob's looking out the window into a big hole lined with a fairly flat sheet flow with large curtain folds, sortof draped through it; I can't see it real well. I would say that this, I'm, the back of the sub is basically sitting on these lobate flows and the front of the sub is hanging over this 5m-deep-hole. Rubble on the sides, some bathtub rings, floored with sheet flows. Wow. The folds are very chaotic, but it does look like the general flow direction of this particular collapse is to the west, which is encouraging.
1040 2996, 6339 We went west down that channel and it sortof ended. So we're gonna turn back around through the cloud of dust and see what happened to that channel.
1045 3020, 6349 We've sortof come back to the channel that we originally sampled. We did pass out of it and we kinda turned around after passing over this big collapse pit and came back to it. And we've told Bob that we wanna center this channel and follow it in a westerly direction. There's a lot of dust though so we might have to sit here for a minute.
1048 We followed this channel for about 5 m, and it's kindof coming up and it looks like its dumping us to the edge of a collapse pit. [This seems like what we did last time.]
1049 We followed the channel for a little bit an it goes into a collapse pit, so I've asked Bob to kindof nudge out and see if we can see the other side of the collapse pit. I wanna see as we go into the collapse pit if I can see if this flow has come out of the collapse pit, flowed into the collapse pit, or if the source might be in this collapse pit. The source is IN the collapse pit.
1053 2672 227 Bad xy Heading 227 and changing. We've asked Bob to turn south, we're going to try to find another channel. I am over chaotically folded sheet flows. Enormous folds with amplitudes of 10cm or more an wavelengths up to 50 cm. It's just this mass of folded flows as far as I can see. Whaddya got out your side? [Same thing].
1055 2674 2977, 6319 We're flying over this chaotically broken up folded sheet flow. I've asked Bob to stop and try to pick up a piece of this stuff. It's gonna be pretty breakable so we'll see what happens.
1106 There's some possible battery problems. We might be down to one battery; we might have to. Well, I'll let someone else do the technical difficulties. We're rising up off this jumbled sheet flow and we asked Bob, because of those potential difficulties, to just head to way point 3 which is a pillow mound that we believe is west of the contact. So we're gonna just follow west, see what happens to this jumbled flow. I've asked Bob to keep an eye out, to kindof shout out any morphologic changes that he sees. If we have time, and things are going well, we'll ask him to take a sample at these morphologic transitions. If not, we'll just keep flying. As much as I like rocks, I feel like it's more important for us to map this stuff than it is to take samples, so there we are.
1107 Bob says we're going upslope as we go west. Out of my ­holy shhh-I see the wall of a collapse pit covered with bathtub rings. The thing is about 15m tall. So that's what we were in. I think we're slowly climbing out of it. There's a brittle star, more collapses, bathtub rings, an anemone, crinoid. Lots of collapse in here. This stuff is just jumbled, messed up stuff. Now we're heading into lobates now.
1108 2670 305 Came up out of the collapse, out of that chaotic terrain, and we're back into friendly lobates, age 1 again.
1109 Still a bad xy. Collapse pit about 20m across, and 5m deep out my window.
1110 2906, 6347 307 Flying over a large, irregular collapse pit. Actually, I see a couple lined up-might be a lava tube system. Crossing over a flat sheet flow that has flowed out of or into a collapse pit. Flowing, actually, it's flowing from one level of collapse, a collapse that's about 4m deep, and then dropping down into the floor of another collapse which is about 8m deep. Which we're flying over now. It's floored with lovely curtain-fold, swirled, flowing away from me, what direction are we facing 307. And there's some local jumbled stuff, some deep collapses. Geeminy Christmas, I can't even see the bottom of that sucker. No, I barely can, that means it's probably about 10m deep at it's deepest. Very chaotic here. All broken up. Talus, probably some autobrecciation.
You know, I think we're following a channel out my window. It's in a collapse.
1112 2839, 6391 There's a channel out my window; we've been following it since we hit that collapse
1113 I think I lost that channel, I think there's a ridge between me and it.
We just passed from all sorts of chaotic jumbled stuff to a very nice flat sheet flow. Looks like a nice channeled flow to me. Can you see it heading out in front of you? [yup]. Can you follow it for a little ways?
2813, 6404 We're following this sheet channel now. Scott's got the margin on his side, I've got the margin on my side. It's flat in the middle. It's in the middle of a collapse so the far margins are very jumbled. The near margins are slight lineations and wrinkles sloping upward away from me.
1115 2791, 6427 Followed that flat sheet channel for about 50 m and then it all sloped up all around so we're giving up on that and heading back to way point 3.
1116 2789, 6429 Came up out of where that flat sheet flow ended and now we're flying up over this hackly, jumbled, broken up stuff. Scott's got a sheet flow on his side; I've just got broken up stuff.
1118 2789, 6429 I now suddenly have lobate, broad, lobate flows, veery, very, very very very broad. I see one lobe that is at least 25m long and about 4m wide. Most of them are wrinkled on the surface. Vertical relief of about 70 cm. Very broad lobate flows. Some of them are 10 m wide.
1120 2701, 6407 Flying over what looks like classic subaerial pahoehoe. There was a lobe with a lot of folds in it. I see an anemone. Slightly heavier sediment than we've been seeing, but it may be because we're flying a little bit higher up than we've been and I'm just getting a different perspective. I'd still call these age 1, maybe 1.5. Nah, not even 1.5. There are very, very small pockets of sediment collected in the cusps of the lobes. These are pretty bulbous lobes. And they are flowing, they tend to be elongate in the direction we're traveling, that's good; they tend to be elongate to the west. Some wrinkles on 'em.
1123 2677 259 Bad xy, heading 258.5. Flying over lobes with vertical relief of up to 70-80 cm. Oh I just flew over my very first striated pillow. It's got buds coming out of it. Big bulbous pillows. Vertical relief of about a meter. Some of these pillows are 2-3m. They are interspersed with the lobes.
1124 I'm seeing some little pockets of white staining. Oh, lots of pockets of white staining. Maybe they're not staining, maybe they're spaghetti worms. [No, it looks like staining]. On the pillows and on the lobes. This is not what I expected. It's very obvious in some of the cracks on the pillows. The white staining is outlining cracks. I see collapses. Lots of white staining. That's very surprising to me. Looks to me like the sediment cover's a little bit heavier too.
1127 2681 257 Bad xy. Heading 257. Flying over these lobes. We passed over a small field of pillows but they're gone now. The sediment cover seems to be a little bit heavier. I'd still call these age 1, maybe 1.5 and it's still very glassy but what's intriguing here is all the white staining in the cracks. So I've asked Bob if he sees an opportune spot to try to take a sample. I don't want to spend a lot of time doing that because of the battery problems, unless there's an opportune spot. It's very interesting to me that there's all this staining out here. There's just the normal biota out here. A rare anemone, a crinoid, something like that. I mean, rarely. I'm looking out my window and in my entire field of view I see nothing.
1129 2683 2484, 6334 259 Got a potentially good fix. I think that's about right. Heading 259. We're still over these lobates. They're smaller lobates, and the white staining is far less prevalent out here, but still peeks out an occasional crack. Collapses are very rare, so I don't know that we're going to stop to get a sample here. Oh, look, a pillow, a true, striated pillow! If the battery turns out okay we'll sample on the way back. John's probably gonna kill me for saying that.
1133 2688 2436, 6320 279 We're in a field of lobes and pillows. The pillows are nicely budded. There is sediment out here. Again I would say age 1, 1.5, but still glassy, even the pillow buds are still intact. And rare, white staining still. Not as common, but I'm looking out my window, and there's this little poop, looks like a bird poop, but it's white hydrothermal staining sitting on top of this lobe.
1143 2425, 6316 Just took a sample in these budded lobates intermingled with pillows, and we've asked Bob to continue onto way point 3. We're going to look for the contact for the end of this age 1, 1.5 lava flow, where it abuts with the older terrain. And I hope we can see it.
1145 2415, 6311 We're out of lobate terrain, an coming into broken up, hackly sheet flow again. Jumbled, broken up folded flow. I still see hydrothermal staining in the intermingled pillows. Again, glassy, sediment cover again about age 1, 1.5 There's one of these lava channels. This is not the contact I was expecting.
1146 2690 2401, 6306 256 There's a large depression off out my side, I can't see the other side of it. This is another one of these lava channels that we've come back into. Scott sees collapse off his side. I see jumbled sheets in the depression. I think this is a jumbled channel that we've suddenly stumbled across.
1147 2375, 6295 243 We're heading to way point 3 but we've stumbled upon this depression. I think this is a jumbled channel. I asked Bob to tweak a little bit so we're sortof flying down it. It's definitely broken up folds. It's interesting that its in a depression. It's very chaotic, I can't get any concept of a flow direction from this thing. And I cannot see the other side of it, which means that it's more than 20m wide.
1149 2692 240 Bad xy. There's a small patch of smooth sheet flow but it's very localized. This is great, this is just like what happens on land, this is great. There's this smooth patch in the middle of this broken up flow.
1151 2693 2344, 6273 261 We're stopped in this jumbled broken up sheet flow. Scott's pretty sure we're pretty close to the margin on his side. We are about a kilometer from the axis, from the center of the axis. So I've asked Bob to stop and take a sample of this jumbled stuff. It's intriguing to me that it's so broken up this far from the axis. So I was gonna grab a chunk of this jumbled stuff and then we'll move on to way point 3.
1154 2691 2354, 6273 Lifting up after collecting a sample of this jumbled sheet flow. Heading onto way point 3. What is that? There's a small patch of white staining outside my window. Isn't that nice?
1159 2691 2263, 6271 Flying about 4m off the bottom and it's jumbled as far as I can see. You too Scott? Scott thinks he's flying over some sort of drop-off, but just as far as I can see, it is jumbled, broken up folded stuff. There is sortof an undulating wavelength to this whole thing. There are sort of dips and swells on the scale of 3-4 m broad with vertical relief probably about 2m up and down some of these swells. God, the mesotech's gonna be really cool on this.
1201 2236, 6268 Still in this jumbled stuff, but Bob says we're climbing up. We're climbing up a ridge. It's still jumbled sheets but we're going up. In the last minute I have seen 2 stalked crinoids out my window. Still glassy, sediment cover is fairly continuous even in this rough terrain. Age 1.5, I think I would call it. No real pockets, but there's a lot of topography out here, on the scale of 3-4 m.
1207 2694 2119, 6225 272 We are still in jumbled sheet flows as far as the eye can see. About 2 minutes ago I saw 2 of those big-headed fish; I've never seen 2 together before. And here's a stalked crinoid out my window now. Still glassy lavas. Definitely broken up folded flow; you can see the individual folds. Lots of dips and swells in this jumbled flow. But pretty uniformly covered in sediment. Age 1.5. If it weren't for the glass, I'd say this sucker was old old old because of the uniform sediment coating on it. But the glass is clearly shining through the sediment so I think It's all the same stuff. I think we've been in the same age lava since we landed. And there's a zoercid out my window. And a stalked crinoid.
1208 Scott says out his window it's jumbled as far as his eye can see too.
1212 2697 2016, 6214 279 Just passed 2 stalked crinoids and a holothurian out my window. I have no idea what they think they're eating. There's another stalked crinoid.
1214 2699 279
1215 We notice, now that we've been flying over this jumbled thing for a while, there are variations, little variations in the jumbled flow. There are variations in the ­what is that? It looks like a sea urchin about 15 cm across. There are regions where there are small fragments, larger fragments, places where it looks really broken up, places where I can see slicken-slide textures, places where it looks like the lava has coiled up and clotted-cauliflower clots. I see an anemone and a stalked crinoid. I'm not sure what that means, what the patterns in fragment size are trying to tell us. But there are regions where it doesn't look like a broken-up folded flow, where it just looks like someone took a hammer to it and smashed the heck out of it. 2 stalked crinoids out my window.
1218 2699 1893, 6235 Looking out my window right now we are in bulbous pillows and lobates. OK, anywhere you can get a sample, Bob, and then we'll want to turn around and get a sample of that jumbled stuff. OK? Great.
1221 2701 1866, 6235 We asked Bob to stop because we thought we were at the end of this jumbled stuff, and we weren't. It looked like just a local squeeze-out of lobes, and locally the lobes were on top of the jumbled stuff. I did see some pillows. The lobates look like they're the same age, too. They're glassy, they're covered with sediment. Same kind of stuff so I asked Bob to continue west until we are sure we up on this mound that we see in the SeaBeam and in the sidescan, and then we'll pause.
1223 1852, 6241 Scott sees lobate out his side, Bob says it's getting smooth out front; I'm seeing jumbled on my side. Really contorted. I think the jumbled stuff still going on. You see a fissure over there?
1223 1832, 6248 I think we're on the margin of this channel, right here. It was jumbled, then we passed over some smooth terrain. Is that lobates over there? [I see right in front of me the same jumbled stuff and right next to it I see lobates] I see lineated sheets out my side.
1227 2711 1798, 6297 Settling down on the floor to get a sample. It's on a sheet flow. A smooth sheet flow, but it's still--the contact between this and the jumbled stuff is gradational, so it's all part of the same distributary system. There's some broken up folds, I guess, that are in front of the sub that we're gonna get a piece of. Out my window, we're looking at some beautiful lineations and some lava roses; they're sure nice.
1239 2711 1777, 6287 199 Bob just picked up a sample of the margin of the sheet flow we've been following, the jumbled sheet flow, although here where he picked it up it was more smooth an wrinkled. We're heading up now and what we're going to do is try to follow this jumbled channel system to the west until it ends. We're just going to keep trying to follow along it 'til it ends. As long as it's still kinda heading west.
1241 1757, 6285 Still following this jumbled system. Here, it looks very much like broken up folds. Same sediment cover, the occasional stalked crinoid. Same dips and swells. Same SOS.
1242 Localized little plop of lobes; its apparently about twice the length of the sub. Sub's 18 ft, 6m, so that's about 12m across.
1244 1721, 6292 Stalked crinoids out my window and there's lobes over me. What do you see over there Scott? [Jumbled sheet flows] There's a little pile of lobes here, it's very local.
1245 We're sortof passing in and over local lobes, that seem to be more common. Although, farther out my window on the port side, it's still just jumbled. Locally the lobes have flowed over the jumbled material. So locally, the lobes are younger than the jumbled. However, they all seem to have the same sediment cover and the same glass, so I'm not convinced they're separate flows. It's just that locally the lobes came out last.
We're flying over a large lobe that's flowed on top of the jumbled. I see the margin of a collapse n the distance. Oh, look at this. They're syn-eruptive. Because right here, right below the sub, the lobes are on top of the jumbled, and 2 m off the port side they are under the jumbled.
1247 Bad fix. Jumbled flow intermingled with large lobes. The lobes are elongate, up to 20-25m long, and maybe 2-3m wide. All appears to be about the same age
1250 I see only lobes out my side, some decorated pillows. Scott, you see jumbled now? I see white hydrothermal staining locally on some of the lobate flows.
1251 1576, 6375 On my side it's all lobates, occasional pillows that are budded. Scott? OK, we're all in lobates? OK, ya wanna squeeze north and see if we can pick up that channel again? The channel may have finally just ended.
1252 1558, 6373 Scott sees jumbled on his side and out my side I see pillows. And there's a large drop-off about a meter away from the submarine, down to a depression that I can't see the other side of, which is floored with jumbled material. I think we're just on a little ridge here, Scott. Cuz there's a drop-off to nothing but jumbled [Yeah cuz there's a drop-off on my side with jumbled flows on the bottom of it] Yep, jumbled as far as I can see.
1254 2734 258 We're sortof coming in and out of some collapses here, but the collapses are only recognized by sortof rare pieces of talus with bathtub rings on 'em. I see one of those big white 6-feet long fish that just sit there and don't do anything. I don't remember what it's called but it's just sitting there not doing anything. Still jumbled, broken up.
1257 2734 1491, 6284 We're going uphill but we're still in this jumbled stuff. I haven't seen anything that looks even remotely like a contact. And we should've hit the pillows a long time ago. So if it gets to beOK
1301 2736 1412, 6261 We think we've finally come out of this jumbled flow into some older pillows. Although it's just slightly heavier sediment cover. There's buds over here! I think this is the same stuff. It's lobate, it's no longer jumbled, but it is maybe age 1.5, just slightly more sediment. Broad lobes, some decorations and some pillows. The pillows look, the pillows are really heavily sedimented. I think the pillows are older. You're right, OK, so the pillows are older with sediment on them. Right now there's a big pillow out my window but there's also these lobes out my window which is the same stuff that we've been flying over. Yeah, there are older pillows out here. Some of the buds are still there but there's definitely heavier sediment here.
1311 Bob just got a piece of that drained pillow. It's definitely an older lava, the pillows are heavily sedimented-I would say the pillows are age 2, 2.5. However I'm concerned that these pillows might just be a kipuka because I see out my side lobes that are glassy, sediment cover about what we've been seeing, age 1, 1.5. Although I think Scott said that he sees more pillows out his window. So anyway we know this is older stuff, but we don't know how extensive this older stuff is and this jumbled stuff may juts keep going. But It's after 1:00 and we might not stick around to find out.
1313 We're underway. Scott's pretty sure that the pillows that we sampled that that was the contact. That out his side, the pillows continue to the north. So we're now heading to the south, trying to go across this jumbled flow that we've been following. We're going to try to take as sample of it. We also wanna see how wide it is, and then we'll start heading east again.
1317 2737 1385, 6217 109 Heading 109 but it doesn't really matter because Bob is settling down on the bottom to find a place to grab a piece of this jumbled flow, which we've crossed back into. Our plan is to head south to try to determine how wide this jumbled region is, and then we'll head east again.
1322 2735 1388, 6212 Bob just got us a sample of the jumbled flow and slam-dunked it into the front basket. We're heading due south across the western portion of this jumbled flow. Lessee if we're heading south, I'm looking east and you're looking west. So keep your eyes peeled to see if you see anything that looks like an end. And we're just going to try to see how wide this jumbled flow is. It's certainly as far as the eye can see. If it looks like it's going to be too wide, we'll abort and start zigzagging our way up the slope. But I would like to see if we can get some dimensions on this.
1324 We're still heading south, passing into some lobes with large collapse pits, with collapses that are about 12m wide, 10-12m wide, and less than 1m deep. And it's lobates as far as I can see, so. Tweak it east a little bit and see if we can pick up that flow again. We still wanna head mostly south, but let's see if we can keep this flow in my view.
1326 2736 161 Lobes and we lost that jumbled sheet flow and we are definitely in age 2 pillows here. Some wonderful top-hat pillows here. The pillows are 1m across, 2m across and about a meter high. [You have pillows over there?] Yup, and they're old, age 2 stuff. [We must be on the contact then-I have lobates]. There's a very heavily sedimented pillow mound on my side. And I can see directly below me occasional fingers of the glassy lobes. Yes, there are elongate pillows on my side. I can see them flowing down a slope, towards, yeah there's a pillow mound out here. We're losing it, it's sortof behind us now. Nice pillow mound. Now we're back into the age 1.5 glassy lobes.
1328 2734 1412, 6117 Back in jumbled material. Let us turn east, an follow this jumbled material for a little while. My guess is we're pretty much due east from way point 4.
1329 2735 1389, 6168 Just gave the go-ahead to head toward way point 4. Scott sees jumbled flows out his side and out my side is a smooth, featureless sheet flow.
1331 2735 1449, 6107 88 Passing over jumbled material now with a lot of relief, a big drop-off to my side. Relief is probably about 6m. Back onto smooth sheets again.
1332 1426, 6206 Just came up a steep drop-off again. I think some of these are possibly tectonic. They're very steep and maybe they're bounding the channels. We're still over this jumbled sheet stuff and I have a feeling we're going to kindof follow it for a while. Oh, there's a collapse pit in the sheet flow. YES! It looks just like a skylight in this jumbled flow. It's about a meter in diameter in the bottom of a pit. The pit was about 6m across, total depth about another 6 m
1333 2732 1472, 6207 90 We are over lobes again. Broad lobes out of that jumbled stuff, so that'll give us some kind of constraint on the width of that channel. The lobes are narrow, not terribly-oh, there's jumbled again
1334 2732 1488, 6190 Some jumbled, so this is a sortof interfingering of jumbled and the lobes. Here the lobes are on top of the jumbled flow.
1334 1516, 6189 Interfingering of lobes and jumbled. Again the lobes seem to be on top of the jumbled. The lobes are about 1-2m across and up to about 10-12m long. They're elongate flowing downhill toward the jumbled which seems to be in a slight depression. But again it all seems to be the same age stuff.
1337 2730 1546, 6200 Settled down. Bob's gonna try to take us a paired sample: a chunk of jumbled and a chunk of lobate that are right next to each other.
1346 2728 We just finished collecting a paired sample: a lobate flow in contact with a jumbled flow near the end of this lava distributary system. We're still 2 km from the axis, nah, 1.5, whatever. Anyway, we're out here. I have asked Bob to proceed to way point 4 and we'll see what we can see.
1347 2724 Lobates interfingered with the jumbled. The jumbled here are below the lobes. And I see a sheet flow, and a fish. Some localized white staining. Mostly broad lobes.
1348 2719 1634, 6089 I'm passing over jumbled flow again, probably the same guy that we've been following along, and it's interfingered with these lobates. Here this patch is quite wide. It's broken up folded flows. The entire patch of lobes was about 3 sub-lengths, which is about 20 m.
1350 2715 1679, 6070 109 Passing over beautiful-oh, there's an orange shrimp that just went swimming by my window. Flying over lineated and jumbled sheet flows. And right on top of everything is this pillow that's about 6m long and about 50cm in diameter, squirting right over it. Nice lineated sheet flow flowing almost exactly away from me, and since we're going east oh here we go here's a lineated sheet flow. I think I just passed over a tumulus. There's a nice lineated sheet flow to the side of me.
1351 2709 1718, 6061 We just came across this sort of lineated sheet flow. I just asked Bob to plant the sub on it and try to follow it for a while. It's surrounded by lobate flows, I don't know how long it's gonna last, but we'll give it a shot.
1352 1719, 6061 The channel just went away.
1353 1745, 6054 Coming back into jumbled flow. Earlier Scott saw a little channel out his window. These little smooth channels seem to only last for about 25 to 50 m. I think they are smooth patches within the jumbled flow, like we see sometimes in Hawaii. I think jumbled flow is the dominant morphology for this distribution system, and the lobates are secondary here. The sheet flow channels that we're seeing I think are just localized concentrations of the flow. Just like we see in Hawaii: sometimes you get those smooth tongues in the a'a flows; I think that's what we're seeing. Stalked crinoids an some shrimp every once in a while.
1355 2705 1806, 6035 There are broad, 10-15m patches of smooth featureless lava within the jumbled. Oh, there's one of those big mother fish again. I wonder if it's the same one? Those big 6-ft-long fish with the huge eyes that just sit there and don't do anything. Sitting right at a contact between a smooth sheet flow and a jumbled flow. Anyway, I think these smooth patches don't go very far, just like we see on land. The prominent morphology here is this broken up jumbled stuff.
1356 2704 Bad xy. Just passing into a beautiful lineated sheet flow and now it's flat, some hydrothermal staining, some sediment. Oh there's one of those fish with legs out there. Tripod fish! Smooth, smooth sheet flow here. Very flat, very broad area of flat sheet flow. I wonder if this is a nice little lava pond here. Wow, this is really flat
1401 2695 2005, 5985 101 Jumbled sheet flow still. Broke up folds. Clasts are pretty good size, actually. Each individual piece is on the order of 10-50 cm, let's do that. Still the same old dips and swells, it's gotta be the same flow we came down on.
1406 2692 101 Still in the jumbled sheet flow. There's quite a bit of relief on this sheet flow, on the order of 6m or more. I think that the depressions are places where the lava flow was concentrated. Drained channels. Occasionally you can see stands of lava that has jagged edges that are somewhat canoe-shaped, on the order of 3m by 2m, in the middle of a depression-like the lava flowed around it perhaps to help shape it. However, none of terrain is as smooth as anything we'd see on land. Which means that either this lava flow was very short-lived and didn't have time to sculpt, or it could be that the nature of the crustal cooling didn't allow the lava to be sculpted. There are some deep pits, some of which may be skylights. Coming up onto more broken-up folds, with individual folds easily identified. Still quite chaotic and I can't get any sense of a flow direction off this thin, although where I think I know what I'm talking about, it seems like it's flowing towards the front of the sub. Which may be wishful thinking because I know we're heading in that direction.
1408 2691 Just passed over another skylight in the bottom of a collapse pit about a meter in diameter.
1408 2691 104 I see occasional broad--
1409 2686 We're now over lobes instead of jumbled sheet flows. Finally.
1411 2687 104 Passing out of the lobates and back into jumbled sheet flow. And here it looks like the lobes flowed on top of the sheet flow. Nice curtain folds, still intact on lava flowing obliquely towards me from the NE.
1411 Passing over a flat sheet flow that is locally folded. It's only about 10m or so before we pass back into the jumbled.
1413 2683 2394, 5889 Just passed way point 4 and we're going to zigzag across this lava distribution system to way point 5. Nice lineated sheet flow in the video, but I'm over jumbled flow with smooth sheet flow in the background.
1415 2682 2554, 5880 20 Just turned a corner, heading 20, to way point 5. We're trying to kindof zig our way across this flow. I don't know if we'll ever come out of it in this direction, but we'll see what we can see.
1417 2683 2475, 5937 23 Back into flat sheet flow, flat folded. Bob says it's back in the jumbled stuff. Yup, that flat stuff was all of about 15 m.
1420 2681 2505, 6020 16 Just passed over a nice pit, looked like a skylight in this jumbled sheet flow. Bottom of the pit was about 60-70m diameter.
1426 2681 17 We just came out of this jumbled sheet flow and into budded lobates, intermingled pillows. There are some budded pillows. Whaddya see out there Scott? [I just see a bunch of lobates. Do you think we're at the edge?] Bob, what do you see? [I just see lobates.] I see jumbled stuff out my window right now. Just came out of it, back into jumbled, out my window I see the contact between the jumbled and these broad lobes are actually feeding that jumbled flow. Holy shit how are we ever going to figure that out. At least right here, that's what it looks like. There's a broad lobe that came down, opened up into a little collapse, and it just spilled into a jumbled flow that kept going as far as I could see.
1429 2094, 6523 We are in lobes now, lobes and rare pillows.
1430 2677 We're turning around, and as we turn around I see a big drop-off on my side, relief about 5 m. There's rubble at the bottom. We're turning around to head south now back over this jumbled flow. We'll just see how far we can get. Hopefully we can get to the other side of it, get a good cross-flow profile an get a good idea of how wide it is. That may be all we get to do.
1432 2591, 6273 We're passing over a series of collapse pits. I just heard Scott say a "big collapse pit" so maybe I'm just getting the fingers at the margin. Filled with bathtub rings. The pits are about 3m deep. I don't see any pillars though. Just collapsed lobes. So I'm seeing lobes now. Seeing any jumbled Scott? [no]
1435 2680 2599, 6200 196 We lost the channel for a while, the jumbled stuff, but it's back out my window now. Scott, what do you have out your window? [jumbled] OK, so we're back in the jumbled.
1436 196 We're going to head SSW until we run out of time or until we get to the southern part of this jumbled stuff, whichever comes first.
1442 2680 184 Bad xy. Heading pretty much south over this jumbled sheet flow. Here's a localized flat region. Hopefully to get the southern boundary before we have to surface. I would really like to know how wide this is so we can compare it to the sonar. I see 2 anemone outside my window. A remnant of a collapse feature: a narrow, 0.5-m wide ridge that's got bathtub rings on it, and a little bit of lobes on the top. There's a big collapse on my side. [We have lobes straight ahead]. We just passed over a little ridge of lobates. Out my window I still see collapse. WOW, with an arch, and pillars holding it up. The wall is probably 2-3m high, with selvages, beautiful! As we come out of collapse-okay, now we're in a series of collapse pits.
1443 We're coming back into collapses. Lots of arches, pillars, narrow pillars. I see no more collapses out my side.
1452 We just collected a sample of this jumbled flow and we can't get a good fix so Bob's trying to figure out how to do that. And then we'll move on.
1500 2670 2443, 5776 We don't have much time left so we decided we're gonna head SSW trying to sortof parallel the 2700 contour along the axis, keeping our eyes open, seeing what we can see about the origin of some of these flows until we run out of time.
1502 2675 2575, 5959 Heading south along the axis. Lineated sheet flow, jumbled sheet flow, local lobes. Here it looks, wow, I can't really tell. Some places the jumbled are on top of the lobes, and some places the lobes are on top of the jumbled. Lobes are quite broad. Chaotically folded sheet flow. Really jumbled, but you can tell that it was folded and that the folds are broken up.
1503 Now we're mostly jumbled. Don't see lobes anymore.
1504 2578 188 Jumbled sheet flow but locally some of the folds are still intact, very chaotically folded. Twists and whorls are very common. Again, the amount of relief is probably up to 6m all totaled with the dips an swells in this jumbled sheet flows which we thought we'd come out of but obviously hadn't. Bob says he sees lobates in front. Let's keep going on this same heading though. I see lobates out my window. The jumbled flows are on top of the lobate flow but it looks like the lobate flows here are oozing out from beneath the jumbled flow. Locally jumbled, local lobes. Some of the lobes are quite large. And there's a pillow. Oh Great. There's a big fat budded pillow about 3m long and about 1.5 m high in the middle of the jumbled stuff. Lobes again abutting the jumbled.
1506 2679 Bad xy. Lobes now. All I see are lobes.
1507 2678 Bad xy. We're sortof interfingering between the lobes and sheets.
1508 2677 We're pretty much flying the contact between the lobate flows and the jumbled flows. Jumbled flows out the port side and lobate flows out the starboard side.
1509 2675 189 Only smooth sheet and jumbled flows-no more lobate flows.
1510 2579, 5777 Let's keep going this course, maybe another, oh, lessee, about 5 minutes--if we have that-and then turn west.
1513 2674 2576, 5750 193 I see jumbled sheets outside my window; Scott says he sees lobes. Actually right now I do see lobes out my window. OK, here they are. Wrinkled lobes, broad lobes, and a large couple of big fat pillows about 2m across and 3-4m long and they're on top of the jumbled flows. Jumbled flows are back again. So we must be flying the contact between the lobes and the jumbled.
1514 2670 2562, 5651 194 I see nothing but lobes now. Scott? [It looks like lobates]
1515 2661, 5645 I just asked Bob to turn due west because we're in pure lobates now. We'll just go down this slope here and see what we can find.
1518 2672 2489, 5623 272 Lobates, locally collapsed. Don't see that channel anymore.
1519 2673 2461, 5620 We are in a mixture of lobes and pillows, mostly lobes. Again, age 1 stuff, I think it's all the same stuff. I see local patches of white hydrothermal staining again, very localized. I've asked Bob to turn north in a last act before we have to surface to see if we can hit that jumbled flow again just to try to nail the southern extent of it.
1522 2675 2468, 5635 348 We're still in lobates, trying to see if e can find the rest of the channel. Entering some collapses here. A broad, shallow collapse here about 7-8m in diameter. Big collapses that are about 2m maybe even 3m deep with lineated sheet flows on the bottom of em. OK, that might've been it.
1524 2677 2460, 5635 347 I think we just nailed the southern end of this channel. OK, I think we've got it. Back in jumbled sheet flows.
1524 2435, 5788 Off bottom
1612.50 Starting Maurice Dance
1619 Maurice Dance is over
Dive 3345 February 4, 1999
Port: Tracy Gregg Starboard: Scott White Pilot: R. Waters
Time Depth (m) xy Heading Observations
0859 1200 Maurice Dance started
0901.30 Maurice Dance completed
0943 We just turned the VCRs on the cameras. Starting to see the bottom but we're having some nav problems so we don't know exactly where we are but we know where we're going, which is launch point 1.
0944 2664 We're flying over broad lobate terrain. Looks like we're flying over broad lobate terrain with vertical relief of, oo, geez, less than 50cm and mostly less than 10 cm. Lobes are about 3m across. I see a stalked crinoid out my window. Very glassy, a dusting of sediment. I'd say this is about age 1. Bob's cruising down to the bottom, hopefully able to pick up a rock somewhere.
0945 2668 110 There are rare collapse pits. They look like collapses in individual lobes. Lobes are slightly decorated but mostly just broad and bulbous.
0946 2671 110 Bob's settling down and he's going to grab a little lobate bud. Meanwhile I'm looking out my window at broad, glassy lobates that are abutting up next to the wall of a collapse. Within the collapse wall I see a hole. A hole that's about 1m tall and about a meter wide, and the hole's got bathtub rings in it. The wall itself is mostly a talus slope, I can't really see any primary structure on that, but I'm gonna get some pictures and some video for practice out here.
0948 Bob's working on the sample. I just turned on the port camera with a 15 s rep rate since we're still moving around, but once we stop moving I'm gonna turn it to 60s, and that's what I'm gonna try to do: 60s when we're stopped; when we're moving, 15s.
0950 We've settled down and I took the first 2 still shots out the window. Hopefully they'll pick up that collapse feature that I can see, but it doesn't show up on the video, unfortunately-it's just too far out there.
0954 Bob's swung around to try to get a chunk of rock off a wall and I see an anemone, 2 anemones, and I just saw a white shrimp with a pink head about 10-12 cm long squirreling along just outside my window. So this looks like-wow, this is stunning. The lobate flows are ponded against a collapse feature and so in the wall of the collapse it looks to me like we're getting a cross section of multiple thin sheet flows. They're flowing down the wall, but of course that's probably just a function of the way the wall looks. The thickness of individual units and they do in some cases look like units, not just bathtub rings. I see one out my window that's about 25-30 cm thick and there are others that are only 5-7 cm thick. And on top, it looks like the whole thing is coated by a folded lava that may have flowed, well, realize the perspective problem, but it looks like it was flowing towards me, toward the port side of the submarine.
1006 2671 136 We just got a sample. Sub is facing 136. Still have bad nav. We're going to head now to way point 2 because we are close enough to way point 1 that we don't really need to worry about it, keeping our eyes open for channels. Bob's gonna try to swap the baseline to see if we can get some better nav.
1006 We're rising above the ground, and as we're doing so we're coming up out of this pit and I can see that the top wall was in fact a series of folded sheet flows, very narrow short-lived channels that apparently just flowed down that wall. I think the sample that Bob collected was part of the levee region of one of these very small little channels, these small, about 2m across and maybe 15m long. They grade right out of these lobate flows although they look somewhat stratigraphically on top.
1008 Heading to way point 2. We're flying over broad lobates that are starting to get a little bit broken up in places due to localized collapse. I'm seeing collapses that are only about 20 cm deep and on the scale of the individual lobes. Again, the lobes are 1-3m across with vertical relief of 50-70cm where I can see the edge of an entire lobe, and where 2 lobes come together the vertical relief is only about 30 cm. Still very glassy, dusting of sediment, I would say age 1.
1010 2668 3094, 6612 Still flying over the broad lobates. Lots of collapse now. Again, collapse on the scale of 5-7m across and only 50cm or so deep. They just look like individual lobes. We're heading into larger collapse region right now with sheet flows. What do you see out your side, Scott? To me this looks like a channel right below? Nope? OK. So it was a localized thing.
1015 3085, 6501 I think I see a small long clump of spaghetti worms out my window. OK Scott, on my side I'm coming over a flat channel right now, a narrow one. What do you see on your side? [looks like lobates]. OK, so this channel is about 3-4m wide, and apparently only about 10m long.
1015 3077, 6478 Still flying over sedimented lobate terrain with rare collapse and occasionally a very decorated lobe. Some of the collapses appear to contain channeled sheet flows on the floors. There are many small holes in the lobates. Small on the order of 10's of cm. You can see that these lobes are largely hollow but many of them just haven't collapsed yet.
1020 3041, 6393 Spotted our first channel and Bob's sortof coming up over on it. Margins are lineated; interior is very platy, heavily wrinkled. It looks pretty narrow to me. Do you think you can see the other side of it Bob? [Yeah, do you wanna look out here?] Please.
1022 3028, 6371 We just flew over some beautiful wrinkled, folded sheet flow, beautiful draped curtain folds and it looks like we're coming up to another channel; this is nice and flat in the middle. Ohmigosh, hold on, this looks like a good one! This looks like a good one. It's wider than the other one was, and it's striated in the middle. Flat-this looks pretty good to me. And isn't that interesting; stratigraphically it is under the lobates out my window. I see a large lobe that has flowed onto the lineated channel. Lots of marginal shear zones. OK.
1024 2670 3013, 6348 We found a fairly flat, lineated channel. Lineations look like migrating shear zones that we're going to try to follow. Bob is taking a sample off the edge of the channel. The channel levees are marked by collapse. The margins look somewhat lobate and the interior of the channel has collapsed, sortof piecemeal down, sot that the margins of the channel are these hollow lobate things. And it's one of these hollow lobate things that Bob's trying to get a piece of. I'm going to pause and try to get some video and some pictures here.
1027 2671 3012, 6347 Stopping for a sample.
1036 2669 3014, 6348 Bob successfully collected a big mamma rock and put it in the sample basked #7. We are now motoring to the west to follow this channel. Now this channel has very little relief to it. We've told him whenever he sees an opportune time to pull a sample off the middle of this flat, somewhat lineated channel, to do so. There's a stalked crinoid right out my window. Wow, what is right in front of me? There's a big collapse right in front of me. Are you looking down a big hole? [Yeah] Cool. Bob's looking out the window into a big hole lined with a fairly flat sheet flow with large curtain folds, sortof draped through it; I can't see it real well. I would say that this, I'm, the back of the sub is basically sitting on these lobate flows and the front of the sub is hanging over this 5m-deep-hole. Rubble on the sides, some bathtub rings, floored with sheet flows. Wow. The folds are very chaotic, but it does look like the general flow direction of this particular collapse is to the west, which is encouraging.
1040 2996, 6339 We went west down that channel and it sortof ended. So we're gonna turn back around through the cloud of dust and see what happened to that channel.
1045 3020, 6349 We've sortof come back to the channel that we originally sampled. We did pass out of it and we kinda turned around after passing over this big collapse pit and came back to it. And we've told Bob that we wanna center this channel and follow it in a westerly direction. There's a lot of dust though so we might have to sit here for a minute.
1048 We followed this channel for about 5 m, and it's kindof coming up and it looks like its dumping us to the edge of a collapse pit. [This seems like what we did last time.]
1049 We followed the channel for a little bit an it goes into a collapse pit, so I've asked Bob to kindof nudge out and see if we can see the other side of the collapse pit. I wanna see as we go into the collapse pit if I can see if this flow has come out of the collapse pit, flowed into the collapse pit, or if the source might be in this collapse pit. The source is IN the collapse pit.
1053 2672 227 Bad xy Heading 227 and changing. We've asked Bob to turn south, we're going to try to find another channel. I am over chaotically folded sheet flows. Enormous folds with amplitudes of 10cm or more an wavelengths up to 50 cm. It's just this mass of folded flows as far as I can see. Whaddya got out your side? [Same thing].
1055 2674 2977, 6319 We're flying over this chaotically broken up folded sheet flow. I've asked Bob to stop and try to pick up a piece of this stuff. It's gonna be pretty breakable so we'll see what happens.
1106 There's some possible battery problems. We might be down to one battery; we might have to. Well, I'll let someone else do the technical difficulties. We're rising up off this jumbled sheet flow and we asked Bob, because of those potential difficulties, to just head to way point 3 which is a pillow mound that we believe is west of the contact. So we're gonna just follow west, see what happens to this jumbled flow. I've asked Bob to keep an eye out, to kindof shout out any morphologic changes that he sees. If we have time, and things are going well, we'll ask him to take a sample at these morphologic transitions. If not, we'll just keep flying. As much as I like rocks, I feel like it's more important for us to map this stuff than it is to take samples, so there we are.
1107 Bob says we're going upslope as we go west. Out of my ­holy shhh-I see the wall of a collapse pit covered with bathtub rings. The thing is about 15m tall. So that's what we were in. I think we're slowly climbing out of it. There's a brittle star, more collapses, bathtub rings, an anemone, crinoid. Lots of collapse in here. This stuff is just jumbled, messed up stuff. Now we're heading into lobates now.
1108 2670 305 Came up out of the collapse, out of that chaotic terrain, and we're back into friendly lobates, age 1 again.
1109 Still a bad xy. Collapse pit about 20m across, and 5m deep out my window.
1110 2906, 6347 307 Flying over a large, irregular collapse pit. Actually, I see a couple lined up-might be a lava tube system. Crossing over a flat sheet flow that has flowed out of or into a collapse pit. Flowing, actually, it's flowing from one level of collapse, a collapse that's about 4m deep, and then dropping down into the floor of another collapse which is about 8m deep. Which we're flying over now. It's floored with lovely curtain-fold, swirled, flowing away from me, what direction are we facing 307. And there's some local jumbled stuff, some deep collapses. Geeminy Christmas, I can't even see the bottom of that sucker. No, I barely can, that means it's probably about 10m deep at it's deepest. Very chaotic here. All broken up. Talus, probably some autobrecciation.
You know, I think we're following a channel out my window. It's in a collapse.
1112 2839, 6391 There's a channel out my window; we've been following it since we hit that collapse
1113 I think I lost that channel, I think there's a ridge between me and it.
We just passed from all sorts of chaotic jumbled stuff to a very nice flat sheet flow. Looks like a nice channeled flow to me. Can you see it heading out in front of you? [yup]. Can you follow it for a little ways?
2813, 6404 We're following this sheet channel now. Scott's got the margin on his side, I've got the margin on my side. It's flat in the middle. It's in the middle of a collapse so the far margins are very jumbled. The near margins are slight lineations and wrinkles sloping upward away from me.
1115 2791, 6427 Followed that flat sheet channel for about 50 m and then it all sloped up all around so we're giving up on that and heading back to way point 3.
1116 2789, 6429 Came up out of where that flat sheet flow ended and now we're flying up over this hackly, jumbled, broken up stuff. Scott's got a sheet flow on his side; I've just got broken up stuff.
1118 2789, 6429 I now suddenly have lobate, broad, lobate flows, veery, very, very very very broad. I see one lobe that is at least 25m long and about 4m wide. Most of them are wrinkled on the surface. Vertical relief of about 70 cm. Very broad lobate flows. Some of them are 10 m wide.
1120 2701, 6407 Flying over what looks like classic subaerial pahoehoe. There was a lobe with a lot of folds in it. I see an anemone. Slightly heavier sediment than we've been seeing, but it may be because we're flying a little bit higher up than we've been and I'm just getting a different perspective. I'd still call these age 1, maybe 1.5. Nah, not even 1.5. There are very, very small pockets of sediment collected in the cusps of the lobes. These are pretty bulbous lobes. And they are flowing, they tend to be elongate in the direction we're traveling, that's good; they tend to be elongate to the west. Some wrinkles on 'em.
1123 2677 259 Bad xy, heading 258.5. Flying over lobes with vertical relief of up to 70-80 cm. Oh I just flew over my very first striated pillow. It's got buds coming out of it. Big bulbous pillows. Vertical relief of about a meter. Some of these pillows are 2-3m. They are interspersed with the lobes.
1124 I'm seeing some little pockets of white staining. Oh, lots of pockets of white staining. Maybe they're not staining, maybe they're spaghetti worms. [No, it looks like staining]. On the pillows and on the lobes. This is not what I expected. It's very obvious in some of the cracks on the pillows. The white staining is outlining cracks. I see collapses. Lots of white staining. That's very surprising to me. Looks to me like the sediment cover's a little bit heavier too.
1127 2681 257 Bad xy. Heading 257. Flying over these lobes. We passed over a small field of pillows but they're gone now. The sediment cover seems to be a little bit heavier. I'd still call these age 1, maybe 1.5 and it's still very glassy but what's intriguing here is all the white staining in the cracks. So I've asked Bob if he sees an opportune spot to try to take a sample. I don't want to spend a lot of time doing that because of the battery problems, unless there's an opportune spot. It's very interesting to me that there's all this staining out here. There's just the normal biota out here. A rare anemone, a crinoid, something like that. I mean, rarely. I'm looking out my window and in my entire field of view I see nothing.
1129 2683 2484, 6334 259 Got a potentially good fix. I think that's about right. Heading 259. We're still over these lobates. They're smaller lobates, and the white staining is far less prevalent out here, but still peeks out an occasional crack. Collapses are very rare, so I don't know that we're going to stop to get a sample here. Oh, look, a pillow, a true, striated pillow! If the battery turns out okay we'll sample on the way back. John's probably gonna kill me for saying that.
1133 2688 2436, 6320 279 We're in a field of lobes and pillows. The pillows are nicely budded. There is sediment out here. Again I would say age 1, 1.5, but still glassy, even the pillow buds are still intact. And rare, white staining still. Not as common, but I'm looking out my window, and there's this little poop, looks like a bird poop, but it's white hydrothermal staining sitting on top of this lobe.
1143 2425, 6316 Just took a sample in these budded lobates intermingled with pillows, and we've asked Bob to continue onto way point 3. We're going to look for the contact for the end of this age 1, 1.5 lava flow, where it abuts with the older terrain. And I hope we can see it.
1145 2415, 6311 We're out of lobate terrain, an coming into broken up, hackly sheet flow again. Jumbled, broken up folded flow. I still see hydrothermal staining in the intermingled pillows. Again, glassy, sediment cover again about age 1, 1.5 There's one of these lava channels. This is not the contact I was expecting.
1146 2690 2401, 6306 256 There's a large depression off out my side, I can't see the other side of it. This is another one of these lava channels that we've come back into. Scott sees collapse off his side. I see jumbled sheets in the depression. I think this is a jumbled channel that we've suddenly stumbled across.
1147 2375, 6295 243 We're heading to way point 3 but we've stumbled upon this depression. I think this is a jumbled channel. I asked Bob to tweak a little bit so we're sortof flying down it. It's definitely broken up folds. It's interesting that its in a depression. It's very chaotic, I can't get any concept of a flow direction from this thing. And I cannot see the other side of it, which means that it's more than 20m wide.
1149 2692 240 Bad xy. There's a small patch of smooth sheet flow but it's very localized. This is great, this is just like what happens on land, this is great. There's this smooth patch in the middle of this broken up flow.
1151 2693 2344, 6273 261 We're stopped in this jumbled broken up sheet flow. Scott's pretty sure we're pretty close to the margin on his side. We are about a kilometer from the axis, from the center of the axis. So I've asked Bob to stop and take a sample of this jumbled stuff. It's intriguing to me that it's so broken up this far from the axis. So I was gonna grab a chunk of this jumbled stuff and then we'll move on to way point 3.
1154 2691 2354, 6273 Lifting up after collecting a sample of this jumbled sheet flow. Heading onto way point 3. What is that? There's a small patch of white staining outside my window. Isn't that nice?
1159 2691 2263, 6271 Flying about 4m off the bottom and it's jumbled as far as I can see. You too Scott? Scott thinks he's flying over some sort of drop-off, but just as far as I can see, it is jumbled, broken up folded stuff. There is sortof an undulating wavelength to this whole thing. There are sort of dips and swells on the scale of 3-4 m broad with vertical relief probably about 2m up and down some of these swells. God, the mesotech's gonna be really cool on this.
1201 2236, 6268 Still in this jumbled stuff, but Bob says we're climbing up. We're climbing up a ridge. It's still jumbled sheets but we're going up. In the last minute I have seen 2 stalked crinoids out my window. Still glassy, sediment cover is fairly continuous even in this rough terrain. Age 1.5, I think I would call it. No real pockets, but there's a lot of topography out here, on the scale of 3-4 m.
1207 2694 2119, 6225 272 We are still in jumbled sheet flows as far as the eye can see. About 2 minutes ago I saw 2 of those big-headed fish; I've never seen 2 together before. And here's a stalked crinoid out my window now. Still glassy lavas. Definitely broken up folded flow; you can see the individual folds. Lots of dips and swells in this jumbled flow. But pretty uniformly covered in sediment. Age 1.5. If it weren't for the glass, I'd say this sucker was old old old because of the uniform sediment coating on it. But the glass is clearly shining through the sediment so I think It's all the same stuff. I think we've been in the same age lava since we landed. And there's a zoercid out my window. And a stalked crinoid.
1208 Scott says out his window it's jumbled as far as his eye can see too.
1212 2697 2016, 6214 279 Just passed 2 stalked crinoids and a holothurian out my window. I have no idea what they think they're eating. There's another stalked crinoid.
1214 2699 279
1215 We notice, now that we've been flying over this jumbled thing for a while, there are variations, little variations in the jumbled flow. There are variations in the ­what is that? It looks like a sea urchin about 15 cm across. There are regions where there are small fragments, larger fragments, places where it looks really broken up, places where I can see slicken-slide textures, places where it looks like the lava has coiled up and clotted-cauliflower clots. I see an anemone and a stalked crinoid. I'm not sure what that means, what the patterns in fragment size are trying to tell us. But there are regions where it doesn't look like a broken-up folded flow, where it just looks like someone took a hammer to it and smashed the heck out of it. 2 stalked crinoids out my window.
1218 2699 1893, 6235 Looking out my window right now we are in bulbous pillows and lobates. OK, anywhere you can get a sample, Bob, and then we'll want to turn around and get a sample of that jumbled stuff. OK? Great.
1221 2701 1866, 6235 We asked Bob to stop because we thought we were at the end of this jumbled stuff, and we weren't. It looked like just a local squeeze-out of lobes, and locally the lobes were on top of the jumbled stuff. I did see some pillows. The lobates look like they're the same age, too. They're glassy, they're covered with sediment. Same kind of stuff so I asked Bob to continue west until we are sure we up on this mound that we see in the SeaBeam and in the sidescan, and then we'll pause.
1223 1852, 6241 Scott sees lobate out his side, Bob says it's getting smooth out front; I'm seeing jumbled on my side. Really contorted. I think the jumbled stuff still going on. You see a fissure over there?
1223 1832, 6248 I think we're on the margin of this channel, right here. It was jumbled, then we passed over some smooth terrain. Is that lobates over there? [I see right in front of me the same jumbled stuff and right next to it I see lobates] I see lineated sheets out my side.
1227 2711 1798, 6297 Settling down on the floor to get a sample. It's on a sheet flow. A smooth sheet flow, but it's still--the contact between this and the jumbled stuff is gradational, so it's all part of the same distributary system. There's some broken up folds, I guess, that are in front of the sub that we're gonna get a piece of. Out my window, we're looking at some beautiful lineations and some lava roses; they're sure nice.
1239 2711 1777, 6287 199 Bob just picked up a sample of the margin of the sheet flow we've been following, the jumbled sheet flow, although here where he picked it up it was more smooth an wrinkled. We're heading up now and what we're going to do is try to follow this jumbled channel system to the west until it ends. We're just going to keep trying to follow along it 'til it ends. As long as it's still kinda heading west.
1241 1757, 6285 Still following this jumbled system. Here, it looks very much like broken up folds. Same sediment cover, the occasional stalked crinoid. Same dips and swells. Same SOS.
1242 Localized little plop of lobes; its apparently about twice the length of the sub. Sub's 18 ft, 6m, so that's about 12m across.
1244 1721, 6292 Stalked crinoids out my window and there's lobes over me. What do you see over there Scott? [Jumbled sheet flows] There's a little pile of lobes here, it's very local.
1245 We're sortof passing in and over local lobes, that seem to be more common. Although, farther out my window on the port side, it's still just jumbled. Locally the lobes have flowed over the jumbled material. So locally, the lobes are younger than the jumbled. However, they all seem to have the same sediment cover and the same glass, so I'm not convinced they're separate flows. It's just that locally the lobes came out last.
We're flying over a large lobe that's flowed on top of the jumbled. I see the margin of a collapse n the distance. Oh, look at this. They're syn-eruptive. Because right here, right below the sub, the lobes are on top of the jumbled, and 2 m off the port side they are under the jumbled.
1247 Bad fix. Jumbled flow intermingled with large lobes. The lobes are elongate, up to 20-25m long, and maybe 2-3m wide. All appears to be about the same age
1250 I see only lobes out my side, some decorated pillows. Scott, you see jumbled now? I see white hydrothermal staining locally on some of the lobate flows.
1251 1576, 6375 On my side it's all lobates, occasional pillows that are budded. Scott? OK, we're all in lobates? OK, ya wanna squeeze north and see if we can pick up that channel again? The channel may have finally just ended.
1252 1558, 6373 Scott sees jumbled on his side and out my side I see pillows. And there's a large drop-off about a meter away from the submarine, down to a depression that I can't see the other side of, which is floored with jumbled material. I think we're just on a little ridge here, Scott. Cuz there's a drop-off to nothing but jumbled [Yeah cuz there's a drop-off on my side with jumbled flows on the bottom of it] Yep, jumbled as far as I can see.
1254 2734 258 We're sortof coming in and out of some collapses here, but the collapses are only recognized by sortof rare pieces of talus with bathtub rings on 'em. I see one of those big white 6-feet long fish that just sit there and don't do anything. I don't remember what it's called but it's just sitting there not doing anything. Still jumbled, broken up.
1257 2734 1491, 6284 We're going uphill but we're still in this jumbled stuff. I haven't seen anything that looks even remotely like a contact. And we should've hit the pillows a long time ago. So if it gets to beOK
1301 2736 1412, 6261 We think we've finally come out of this jumbled flow into some older pillows. Although it's just slightly heavier sediment cover. There's buds over here! I think this is the same stuff. It's lobate, it's no longer jumbled, but it is maybe age 1.5, just slightly more sediment. Broad lobes, some decorations and some pillows. The pillows look, the pillows are really heavily sedimented. I think the pillows are older. You're right, OK, so the pillows are older with sediment on them. Right now there's a big pillow out my window but there's also these lobes out my window which is the same stuff that we've been flying over. Yeah, there are older pillows out here. Some of the buds are still there but there's definitely heavier sediment here.
1311 Bob just got a piece of that drained pillow. It's definitely an older lava, the pillows are heavily sedimented-I would say the pillows are age 2, 2.5. However I'm concerned that these pillows might just be a kipuka because I see out my side lobes that are glassy, sediment cover about what we've been seeing, age 1, 1.5. Although I think Scott said that he sees more pillows out his window. So anyway we know this is older stuff, but we don't know how extensive this older stuff is and this jumbled stuff may juts keep going. But It's after 1:00 and we might not stick around to find out.
1313 We're underway. Scott's pretty sure that the pillows that we sampled that that was the contact. That out his side, the pillows continue to the north. So we're now heading to the south, trying to go across this jumbled flow that we've been following. We're going to try to take as sample of it. We also wanna see how wide it is, and then we'll start heading east again.
1317 2737 1385, 6217 109 Heading 109 but it doesn't really matter because Bob is settling down on the bottom to find a place to grab a piece of this jumbled flow, which we've crossed back into. Our plan is to head south to try to determine how wide this jumbled region is, and then we'll head east again.
1322 2735 1388, 6212 Bob just got us a sample of the jumbled flow and slam-dunked it into the front basket. We're heading due south across the western portion of this jumbled flow. Lessee if we're heading south, I'm looking east and you're looking west. So keep your eyes peeled to see if you see anything that looks like an end. And we're just going to try to see how wide this jumbled flow is. It's certainly as far as the eye can see. If it looks like it's going to be too wide, we'll abort and start zigzagging our way up the slope. But I would like to see if we can get some dimensions on this.
1324 We're still heading south, passing into some lobes with large collapse pits, with collapses that are about 12m wide, 10-12m wide, and less than 1m deep. And it's lobates as far as I can see, so. Tweak it east a little bit and see if we can pick up that flow again. We still wanna head mostly south, but let's see if we can keep this flow in my view.
1326 2736 161 Lobes and we lost that jumbled sheet flow and we are definitely in age 2 pillows here. Some wonderful top-hat pillows here. The pillows are 1m across, 2m across and about a meter high. [You have pillows over there?] Yup, and they're old, age 2 stuff. [We must be on the contact then-I have lobates]. There's a very heavily sedimented pillow mound on my side. And I can see directly below me occasional fingers of the glassy lobes. Yes, there are elongate pillows on my side. I can see them flowing down a slope, towards, yeah there's a pillow mound out here. We're losing it, it's sortof behind us now. Nice pillow mound. Now we're back into the age 1.5 glassy lobes.
1328 2734 1412, 6117 Back in jumbled material. Let us turn east, an follow this jumbled material for a little while. My guess is we're pretty much due east from way point 4.
1329 2735 1389, 6168 Just gave the go-ahead to head toward way point 4. Scott sees jumbled flows out his side and out my side is a smooth, featureless sheet flow.
1331 2735 1449, 6107 88 Passing over jumbled material now with a lot of relief, a big drop-off to my side. Relief is probably about 6m. Back onto smooth sheets again.
1332 1426, 6206 Just came up a steep drop-off again. I think some of these are possibly tectonic. They're very steep and maybe they're bounding the channels. We're still over this jumbled sheet stuff and I have a feeling we're going to kindof follow it for a while. Oh, there's a collapse pit in the sheet flow. YES! It looks just like a skylight in this jumbled flow. It's about a meter in diameter in the bottom of a pit. The pit was about 6m across, total depth about another 6 m
1333 2732 1472, 6207 90 We are over lobes again. Broad lobes out of that jumbled stuff, so that'll give us some kind of constraint on the width of that channel. The lobes are narrow, not terribly-oh, there's jumbled again
1334 2732 1488, 6190 Some jumbled, so this is a sortof interfingering of jumbled and the lobes. Here the lobes are on top of the jumbled flow.
1334 1516, 6189 Interfingering of lobes and jumbled. Again the lobes seem to be on top of the jumbled. The lobes are about 1-2m across and up to about 10-12m long. They're elongate flowing downhill toward the jumbled which seems to be in a slight depression. But again it all seems to be the same age stuff.
1337 2730 1546, 6200 Settled down. Bob's gonna try to take us a paired sample: a chunk of jumbled and a chunk of lobate that are right next to each other.
1346 2728 We just finished collecting a paired sample: a lobate flow in contact with a jumbled flow near the end of this lava distributary system. We're still 2 km from the axis, nah, 1.5, whatever. Anyway, we're out here. I have asked Bob to proceed to way point 4 and we'll see what we can see.
1347 2724 Lobates interfingered with the jumbled. The jumbled here are below the lobes. And I see a sheet flow, and a fish. Some localized white staining. Mostly broad lobes.
1348 2719 1634, 6089 I'm passing over jumbled flow again, probably the same guy that we've been following along, and it's interfingered with these lobates. Here this patch is quite wide. It's broken up folded flows. The entire patch of lobes was about 3 sub-lengths, which is about 20 m.
1350 2715 1679, 6070 109 Passing over beautiful-oh, there's an orange shrimp that just went swimming by my window. Flying over lineated and jumbled sheet flows. And right on top of everything is this pillow that's about 6m long and about 50cm in diameter, squirting right over it. Nice lineated sheet flow flowing almost exactly away from me, and since we're going east oh here we go here's a lineated sheet flow. I think I just passed over a tumulus. There's a nice lineated sheet flow to the side of me.
1351 2709 1718, 6061 We just came across this sort of lineated sheet flow. I just asked Bob to plant the sub on it and try to follow it for a while. It's surrounded by lobate flows, I don't know how long it's gonna last, but we'll give it a shot.
1352 1719, 6061 The channel just went away.
1353 1745, 6054 Coming back into jumbled flow. Earlier Scott saw a little channel out his window. These little smooth channels seem to only last for about 25 to 50 m. I think they are smooth patches within the jumbled flow, like we see sometimes in Hawaii. I think jumbled flow is the dominant morphology for this distribution system, and the lobates are secondary here. The sheet flow channels that we're seeing I think are just localized concentrations of the flow. Just like we see in Hawaii: sometimes you get those smooth tongues in the a'a flows; I think that's what we're seeing. Stalked crinoids an some shrimp every once in a while.
1355 2705 1806, 6035 There are broad, 10-15m patches of smooth featureless lava within the jumbled. Oh, there's one of those big mother fish again. I wonder if it's the same one? Those big 6-ft-long fish with the huge eyes that just sit there and don't do anything. Sitting right at a contact between a smooth sheet flow and a jumbled flow. Anyway, I think these smooth patches don't go very far, just like we see on land. The prominent morphology here is this broken up jumbled stuff.
1356 2704 Bad xy. Just passing into a beautiful lineated sheet flow and now it's flat, some hydrothermal staining, some sediment. Oh there's one of those fish with legs out there. Tripod fish! Smooth, smooth sheet flow here. Very flat, very broad area of flat sheet flow. I wonder if this is a nice little lava pond here. Wow, this is really flat
1401 2695 2005, 5985 101 Jumbled sheet flow still. Broke up folds. Clasts are pretty good size, actually. Each individual piece is on the order of 10-50 cm, let's do that. Still the same old dips and swells, it's gotta be the same flow we came down on.
1406 2692 101 Still in the jumbled sheet flow. There's quite a bit of relief on this sheet flow, on the order of 6m or more. I think that the depressions are places where the lava flow was concentrated. Drained channels. Occasionally you can see stands of lava that has jagged edges that are somewhat canoe-shaped, on the order of 3m by 2m, in the middle of a depression-like the lava flowed around it perhaps to help shape it. However, none of terrain is as smooth as anything we'd see on land. Which means that either this lava flow was very short-lived and didn't have time to sculpt, or it could be that the nature of the crustal cooling didn't allow the lava to be sculpted. There are some deep pits, some of which may be skylights. Coming up onto more broken-up folds, with individual folds easily identified. Still quite chaotic and I can't get any sense of a flow direction off this thin, although where I think I know what I'm talking about, it seems like it's flowing towards the front of the sub. Which may be wishful thinking because I know we're heading in that direction.
1408 2691 Just passed over another skylight in the bottom of a collapse pit about a meter in diameter.
1408 2691 104 I see occasional broad--
1409 2686 We're now over lobes instead of jumbled sheet flows. Finally.
1411 2687 104 Passing out of the lobates and back into jumbled sheet flow. And here it looks like the lobes flowed on top of the sheet flow. Nice curtain folds, still intact on lava flowing obliquely towards me from the NE.
1411 Passing over a flat sheet flow that is locally folded. It's only about 10m or so before we pass back into the jumbled.
1413 2683 2394, 5889 Just passed way point 4 and we're going to zigzag across this lava distribution system to way point 5. Nice lineated sheet flow in the video, but I'm over jumbled flow with smooth sheet flow in the background.
1415 2682 2554, 5880 20 Just turned a corner, heading 20, to way point 5. We're trying to kindof zig our way across this flow. I don't know if we'll ever come out of it in this direction, but we'll see what we can see.
1417 2683 2475, 5937 23 Back into flat sheet flow, flat folded. Bob says it's back in the jumbled stuff. Yup, that flat stuff was all of about 15 m.
1420 2681 2505, 6020 16 Just passed over a nice pit, looked like a skylight in this jumbled sheet flow. Bottom of the pit was about 60-70m diameter.
1426 2681 17 We just came out of this jumbled sheet flow and into budded lobates, intermingled pillows. There are some budded pillows. Whaddya see out there Scott? [I just see a bunch of lobates. Do you think we're at the edge?] Bob, what do you see? [I just see lobates.] I see jumbled stuff out my window right now. Just came out of it, back into jumbled, out my window I see the contact between the jumbled and these broad lobes are actually feeding that jumbled flow. Holy shit how are we ever going to figure that out. At least right here, that's what it looks like. There's a broad lobe that came down, opened up into a little collapse, and it just spilled into a jumbled flow that kept going as far as I could see.
1429 2094, 6523 We are in lobes now, lobes and rare pillows.
1430 2677 We're turning around, and as we turn around I see a big drop-off on my side, relief about 5 m. There's rubble at the bottom. We're turning around to head south now back over this jumbled flow. We'll just see how far we can get. Hopefully we can get to the other side of it, get a good cross-flow profile an get a good idea of how wide it is. That may be all we get to do.
1432 2591, 6273 We're passing over a series of collapse pits. I just heard Scott say a "big collapse pit" so maybe I'm just getting the fingers at the margin. Filled with bathtub rings. The pits are about 3m deep. I don't see any pillars though. Just collapsed lobes. So I'm seeing lobes now. Seeing any jumbled Scott? [no]
1435 2680 2599, 6200 196 We lost the channel for a while, the jumbled stuff, but it's back out my window now. Scott, what do you have out your window? [jumbled] OK, so we're back in the jumbled.
1436 196 We're going to head SSW until we run out of time or until we get to the southern part of this jumbled stuff, whichever comes first.
1442 2680 184 Bad xy. Heading pretty much south over this jumbled sheet flow. Here's a localized flat region. Hopefully to get the southern boundary before we have to surface. I would really like to know how wide this is so we can compare it to the sonar. I see 2 anemone outside my window. A remnant of a collapse feature: a narrow, 0.5-m wide ridge that's got bathtub rings on it, and a little bit of lobes on the top. There's a big collapse on my side. [We have lobes straight ahead]. We just passed over a little ridge of lobates. Out my window I still see collapse. WOW, with an arch, and pillars holding it up. The wall is probably 2-3m high, with selvages, beautiful! As we come out of collapse-okay, now we're in a series of collapse pits.
1443 We're coming back into collapses. Lots of arches, pillars, narrow pillars. I see no more collapses out my side.
1452 We just collected a sample of this jumbled flow and we can't get a good fix so Bob's trying to figure out how to do that. And then we'll move on.
1500 2670 2443, 5776 We don't have much time left so we decided we're gonna head SSW trying to sortof parallel the 2700 contour along the axis, keeping our eyes open, seeing what we can see about the origin of some of these flows until we run out of time.
1502 2675 2575, 5959 Heading south along the axis. Lineated sheet flow, jumbled sheet flow, local lobes. Here it looks, wow, I can't really tell. Some places the jumbled are on top of the lobes, and some places the lobes are on top of the jumbled. Lobes are quite broad. Chaotically folded sheet flow. Really jumbled, but you can tell that it was folded and that the folds are broken up.
1503 Now we're mostly jumbled. Don't see lobes anymore.
1504 2578 188 Jumbled sheet flow but locally some of the folds are still intact, very chaotically folded. Twists and whorls are very common. Again, the amount of relief is probably up to 6m all totaled with the dips an swells in this jumbled sheet flows which we thought we'd come out of but obviously hadn't. Bob says he sees lobates in front. Let's keep going on this same heading though. I see lobates out my window. The jumbled flows are on top of the lobate flow but it looks like the lobate flows here are oozing out from beneath the jumbled flow. Locally jumbled, local lobes. Some of the lobes are quite large. And there's a pillow. Oh Great. There's a big fat budded pillow about 3m long and about 1.5 m high in the middle of the jumbled stuff. Lobes again abutting the jumbled.
1506 2679 Bad xy. Lobes now. All I see are lobes.
1507 2678 Bad xy. We're sortof interfingering between the lobes and sheets.
1508 2677 We're pretty much flying the contact between the lobate flows and the jumbled flows. Jumbled flows out the port side and lobate flows out the starboard side.
1509 2675 189 Only smooth sheet and jumbled flows-no more lobate flows.
1510 2579, 5777 Let's keep going this course, maybe another, oh, lessee, about 5 minutes--if we have that-and then turn west.
1513 2674 2576, 5750 193 I see jumbled sheets outside my window; Scott says he sees lobes. Actually right now I do see lobes out my window. OK, here they are. Wrinkled lobes, broad lobes, and a large couple of big fat pillows about 2m across and 3-4m long and they're on top of the jumbled flows. Jumbled flows are back again. So we must be flying the contact between the lobes and the jumbled.
1514 2670 2562, 5651 194 I see nothing but lobes now. Scott? [It looks like lobates]
1515 2661, 5645 I just asked Bob to turn due west because we're in pure lobates now. We'll just go down this slope here and see what we can find.
1518 2672 2489, 5623 272 Lobates, locally collapsed. Don't see that channel anymore.
1519 2673 2461, 5620 We are in a mixture of lobes and pillows, mostly lobes. Again, age 1 stuff, I think it's all the same stuff. I see local patches of white hydrothermal staining again, very localized. I've asked Bob to turn north in a last act before we have to surface to see if we can hit that jumbled flow again just to try to nail the southern extent of it.
1522 2675 2468, 5635 348 We're still in lobates, trying to see if e can find the rest of the channel. Entering some collapses here. A broad, shallow collapse here about 7-8m in diameter. Big collapses that are about 2m maybe even 3m deep with lineated sheet flows on the bottom of em. OK, that might've been it.
1524 2677 2460, 5635 347 I think we just nailed the southern end of this channel. OK, I think we've got it. Back in jumbled sheet flows.
1524 2435, 5788 Off bottom
1612.50 Starting Maurice Dance
1619 Maurice Dance is over