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Found 71 results

2008

Partitioning of molybdenum to 60 kbar along a warped Fe-FeS liquidus
Walker, D.; Li, J.
Chemical Geology
(2008)
Issue:
3-4
Pages:
166-173
Volume:
248
DOI 10.1016/j.chemgeo.2007.04.006

2007

Laser-heated diamond anvil cell at the advanced light source beamline 12.2.2
Caldwell, W. A.; Kunz, M.; Celestre, R. S.; Domning, E. E.; Walter, M. J.; Walker, D.; Glossinger, J.; MacDowell, A. A.; Padmore, H. A.; Jeanloz, R.; Clark, S. M.
Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment
(2007)
Issue:
1
Pages:
221-225
Volume:
582
DOI 10.1016/j.nima.2007.08.113
EarthChem - A geochemistry data network
Lehnert, K.; Walker, D.; Sarbas, B.
Geochimica Et Cosmochimica Acta
(2007)
Issue:
15
Pages:
A559-A559
Volume:
71
Externally-driven charge transfer in silicates at high pressure and temperature: A XANES study
Kavner, A.; Walker, D.; Sutton, S.; Newville, M.
Earth and Planetary Science Letters
(2007)
Issue:
3-4
Pages:
314-327
Volume:
256
DOI 10.1016/j.epsl.2006.12.020
Galena stability to 26 kbar
Wheeler, K. T.; Walker, D.; Johnson, M. C.
American Journal of Science
(2007)
Issue:
3
Pages:
590-611
Volume:
307
Doi 10.2475/03.2007.02

2006

Using advanced accelerators to understand the lower mantle and beyond
Clark, S. M.; Speciale, S.; Jeanloz, R.; Kunz, M.; Caldwell, W. A.; Walter, M.; Walker, D.
Geochimica Et Cosmochimica Acta
(2006)
Issue:
18
Pages:
A104-A104
Volume:
70
DOI 10.1016/j.gca.2006.06.122
Constraints on core formation from Pt partitioning in mafic silicate liquids at high temperatures
Cottrell, E.; Walker, D.
Geochimica Et Cosmochimica Acta
(2006)
Issue:
6
Pages:
1565-1580
Volume:
70
DOI 10.1016/j.gca.2005.11.021
Core/mantle-like interactions in an electric field
Kavner, A.; Walker, D.
Earth and Planetary Science Letters
(2006)
Issue:
1-2
Pages:
316-329
Volume:
248
DOI 10.1016/j.epsl.2006.05.033
Experimental partitioning of uranium between liquid iron sulfide and liquid silicate: Implications for radioactivity in the Earth's core
Wheeler, K. T.; Walker, D.; Fei, Y. W.; Minarik, W. G.; McDonough, W. F.
Geochimica Et Cosmochimica Acta
(2006)
Issue:
6
Pages:
1537-1547
Volume:
70
DOI 10.1016/j.gca.2005.11.023

2005

Halite-sylvite thermoconsolution
Walker, D.; Verma, P. K.; Cranswick, L. M. D.; Clark, S. M.; Jones, R. L.; Buhre, S.
American Mineralogist
(2005)
Issue:
1
LDEO Publication Number:
6670
Pages:
229-239
Volume:
90
Core-mantle chemical issues
Walker, D.
Canadian Mineralogist
(2005)
Pages:
1553-1564
Volume:
43

2004

Halite-sylvite thermoelasticity
Walker, D.; Verma, P. K.; Cranswick, L. M. D.; Jones, R. L.; Clark, S. M.; Buhre, S.
American Mineralogist
(2004)
Issue:
1
LDEO Publication Number:
6547
Pages:
204-210
Volume:
89
Experimental partitioning of Tc, Mo, Ru, and Re between solid and liquid during crystallization in Fe-Ni-S
Lazar, C.; Walker, D.; Walker, R. J.
Geochimica Et Cosmochimica Acta
(2004)
Issue:
3
LDEO Publication Number:
6507
Pages:
643-651
Volume:
68

2002

Thermal equations of state for B1 and B2 KCl
Walker, D.; Cranswick, L. M. D.; Verma, P. K.; Clark, S. M.; Buhre, S.
American Mineralogist
(2002)
Issue:
7
Pages:
805-812
Volume:
87
O-2 volumes at high pressure from KClO4 decomposition: D ' as a siderophile element pump instead of a lid on the core
Walker, D.; Clark, S. M.; Cranswick, L. M. D.; Johnson, M. C.; Jones, R. L.
Geochemistry Geophysics Geosystems
(2002)
LDEO Publication Number:
6377
Pages:
-
Volume:
3
Doi 10.1029/2001gc000225

2001

Synthesis and thermal decomposition of tetragonal RbClO4 and volume of fluid O-2 from 2 to 9 GPa
Walker, D.; Hughes, G.; Cranswick, L. M. D.; Clark, S. M.; Buhre, S.
Geochemistry Geophysics Geosystems
(2001)
Pages:
art. no.-2001GC000154
Volume:
2
Thermal decomposition of rhombohedral KClO3 from 29-76 kilobars and implications for the molar volume of fluid oxygen at high pressures
Johnson, M. C.; Walker, D.; Clark, S. M.; Jones, R. L.
American Mineralogist
(2001)
Issue:
11-12
Pages:
1367-1379
Volume:
86

2000

Core participation in mantle geochemistry: Geochemical Society Ingerson Lecture, GSA Denver, October 1999
Walker, D.
Geochimica Et Cosmochimica Acta
(2000)
Issue:
17
Pages:
2897-2911
Volume:
64
Rapid methods for the calibration of solid-state detectors
Walker, D.; Clark, S. M.; Jones, R. L.; Cranswick, L. M. D.
Journal of Synchrotron Radiation
(2000)
Pages:
18-21
Volume:
7

1999

High-pressure synthesis of one-dimensional alkaline-earth palladates
Wang, Y. H.; Walker, D.; Chen, B. H.; Scott, B. A.
Journal of Alloys and Compounds
(1999)
Issue:
1-2
Pages:
98-104
Volume:
285
Composition and structure of a new palladate Ca4-1.5xAuxPd4O8 (x similar to 0.54) synthesized at high pressure
Wang, Y. H.; Walker, D.; Scott, B. A.
Journal of Alloys and Compounds
(1999)
Issue:
1-2
Pages:
77-83
Volume:
292
Core formation in the presence of various C-H-O volatile species
Jana, D.; Walker, D.
Geochimica Et Cosmochimica Acta
(1999)
Issue:
15
Pages:
2299-2310
Volume:
63

1998

Anatomy of high-pressure synthesis reactions in the Sr-Cu-O-Cl system
Walker, D.; Scott, B. A.; Chen, B. H.; Wang, Y. H.
Physica C-Superconductivity and Its Applications
(1998)
Issue:
1-2
Pages:
52-58
Volume:
299
The effects of liquid immiscibility and thermal diffusion on oxygen isotopes in silicate liquids
Kyser, T. K.; Lesher, C. E.; Walker, D.
Contributions to Mineralogy and Petrology
(1998)
Issue:
4
Pages:
373-381
Volume:
133
S diffusivity in Fe-Ni-S-P melts
Majewski, E.; Walker, D.
Earth and Planetary Science Letters
(1998)
Issue:
3-4
Pages:
823-830
Volume:
160

1997

The impact of carbon on element distribution during core formation
Jana, D.; Walker, D.
Geochimica Et Cosmochimica Acta
(1997)
Issue:
13
Pages:
2759-2763
Volume:
61
The influence of silicate melt composition on distribution of siderophile elements among metal and silicate liquids
Jana, D.; Walker, D.
Earth and Planetary Science Letters
(1997)
Issue:
3-4
Pages:
463-472
Volume:
150
The influence of sulfur on partitioning of siderophile elements
Jana, D.; Walker, D.
Geochimica Et Cosmochimica Acta
(1997)
Issue:
24
Pages:
5255-5277
Volume:
61
Application of scanning SQUID petrology to high-pressure materials science
Scott, B. A.; Kirtley, J. R.; Walker, D.; Chen, B. H.; Wang, Y. H.
Nature
(1997)
Issue:
6647
Pages:
164-167
Volume:
389
Chen, B. H.; Walker, D.
Journal of Solid State Chemistry
(1997)
Issue:
1
Pages:
185-188
Volume:
131
Crystal chemistry of LuPd2O4 and other spinel-related NdCu2O4-LaPd2O4-type compounds
Chen, B. H.; Walker, D.; Scott, B. A.
Chemistry of Materials
(1997)
Issue:
7
Pages:
1700-1703
Volume:
9
The role of contamination in Sr-Cu-O reactions at high pressure
Wang, Y. H.; Scott, B. A.; Chen, B. H.; Walker, D.
Physica C
(1997)
Issue:
1-2
Pages:
52-64
Volume:
275

1996

Synthesis and structure of a new perovskite, SrCuO2.5
Chen, B. H.; Walker, D.; Scott, B. A.; Mitzi, D. B.
Journal of Solid State Chemistry
(1996)
Issue:
2
Pages:
498-501
Volume:
121
Thermobarometry of mafic igneous rocks based on clinopyroxene-liquid equilibria, 0-30 kbar
Putirka, K.; Johnson, M.; Kinzler, R.; Longhi, J.; Walker, D.
Contributions to Mineralogy and Petrology
(1996)
Issue:
1
Pages:
92-108
Volume:
123

1995

High-Pressure Synthesis and Structure of the New Spinel-Related Series Lncu(2)O(4) (Ln=Nd, Gd, Er, Lu, Y)
Chen, B. H.; Walker, D.; Suard, E. Y.; Scott, B. A.
Chemistry of Materials
(1995)
Issue:
2
Pages:
355-358
Volume:
7
High-Pressure Synthesis of Ndcuo3-Delta Perovskites (0-Less-Than-or-Equal-to-Delta-Less-Than-or-Equal-to-0.5)
Chen, B. H.; Walker, D.; Suard, E.; Scott, B. A.; Mercey, B.; Hervieu, M.; Raveau, B.
Inorganic Chemistry
(1995)
Issue:
8
Pages:
2077-2083
Volume:
34
Experimental Investigations of the Partitioning of Nb, Mo, Ba, Ce, Pb, Ra, Th, Pa, and U between Immiscible Carbonate and Silicate Liquids
Jones, J. H.; Walker, D.; Pickett, D. A.; Murrell, M. T.; Beattie, P.
Geochimica Et Cosmochimica Acta
(1995)
Issue:
7
Pages:
1307-1320
Volume:
59

1994

High-Temperature Oxygen-Isotope Fractionation in the Enstatite-Olivine-Baco3 System
Rosenbaum, J. M.; Kyser, T. K.; Walker, D.
Geochimica Et Cosmochimica Acta
(1994)
Issue:
12
Pages:
2653-2660
Volume:
58
Layer Dependence of the Superconducting Transition-Temperature of Hgba2can-1cuno2n+2+Delta
Scott, B. A.; Suard, E. Y.; Tsuei, C. C.; Mitzi, D. B.; Mcguire, T. R.; Chen, B. H.; Walker, D.
Physica C
(1994)
Issue:
3-4
Pages:
239-245
Volume:
230
Oxygen-Isotope Fractionation in the Mantle
Rosenbaum, J. M.; Walker, D.; Kyser, T. K.
Geochimica Et Cosmochimica Acta
(1994)
Issue:
21
Pages:
4767-4777
Volume:
58

1993

Superheating Effects on Metal-Silicate Partitioning of Siderophile Elements
Walker, D.; Norby, L.; Jones, J. H.
Science
(1993)
Issue:
5141
Pages:
1858-1861
Volume:
262
Infrared Spectroscopic Investigation of Hydroxyl in Beta-(Mg,Fe)2sio4 and Coexisting Olivine - Implications for Mantle Evolution and Dynamics
Young, T. E.; Green, H. W.; Hofmeister, A. M.; Walker, D.
Physics and Chemistry of Minerals
(1993)
Issue:
6
Pages:
409-422
Volume:
19
Ureilite Smelting
Walker, D.; Grove, T.
Meteoritics
(1993)
Issue:
5
Pages:
629-636
Volume:
28
Brucite [Mg(Oh)2] Dehydration and the Molar Volume of H2o to 15 Gpa
Johnson, M. C.; Walker, D.
American Mineralogist
(1993)
Issue:
3-4
Pages:
271-284
Volume:
78
Olivine Flotation in Mantle Melt
Agee, C. B.; Walker, D.
Earth and Planetary Science Letters
(1993)
Issue:
2-3
Pages:
315-324
Volume:
114

1992

Halite Pseudomorphs after Gypsum - a Suggested Mechanism
Schreiber, B. C.; Walker, D.
Journal of Sedimentary Petrology
(1992)
Issue:
1
Pages:
61-70
Volume:
62

1991

Thermal-Diffusion in Metal-Sulfide Liquids - Early Results
Jones, J. H.; Walker, D.
Proceedings of Lunar and Planetary Science
(1991)
Pages:
367-373
Volume:
21
Lubrication, Gasketing, and Precision in Multianvil Experiments
Walker, D.
American Mineralogist
(1991)
Issue:
7-8
Pages:
1092-1100
Volume:
76
Partitioning of Siderophile Elements in the Fe-Ni-S System - 1 Bar to 80 Kbar
Jones, J. H.; Walker, D.
Earth and Planetary Science Letters
(1991)
Issue:
1-3
Pages:
127-133
Volume:
105

1990

Aluminum Partitioning between Olivine and Ultrabasic Silicate Liquid to 6-Gpa
Agee, C. B.; Walker, D.
Contributions to Mineralogy and Petrology
(1990)
Issue:
3
Pages:
243-254
Volume:
105
Anticrack-Associated Faulting at Very High-Pressure in Natural Olivine
Green, H. W.; Young, T. E.; Walker, D.; Scholz, C. H.
Nature
(1990)
Issue:
6303
Pages:
720-722
Volume:
348

1989

Constraints on Element Partition-Coefficients between Mgsio3 Perovskite and Liquid Determined by Direct Measurements - Comments
Agee, C. B.; Walker, D.
Earth and Planetary Science Letters
(1989)
Issue:
1-2
Pages:
160-161
Volume:
94
Diffusive Crystal Dissolution
Zhang, Y. X.; Walker, D.; Lesher, C. E.
Contributions to Mineralogy and Petrology
(1989)
Issue:
4
Pages:
492-513
Volume:
102

1988

Static Compression and Olivine Flotation in Ultrabasic Silicate Liquid
Agee, C. B.; Walker, D.
Journal of Geophysical Research-Solid Earth and Planets
(1988)
Issue:
B4
Pages:
3437-3449
Volume:
93
Adcumulus Dunite Growth in a Laboratory Thermal-Gradient
Walker, D.; Jurewicz, S.; Watson, E. B.
Contributions to Mineralogy and Petrology
(1988)
Issue:
3
Pages:
306-319
Volume:
99
Ureilite Compaction
Walker, D.; Agee, C. B.
Meteoritics
(1988)
Issue:
1
Pages:
81-91
Volume:
23
Mass Balance and Phase Density Constraints on Early Differentiation of Chondritic Mantle
Agee, C. B.; Walker, D.
Earth and Planetary Science Letters
(1988)
Issue:
2
Pages:
144-156
Volume:
90
Cumulate Maturation and Melt Migration in a Temperature-Gradient
Lesher, C. E.; Walker, D.
Journal of Geophysical Research-Solid Earth and Planets
(1988)
Issue:
B9
Pages:
10295-10311
Volume:
93
Fusion Curve Slope and Crystal Liquid Buoyancy
Walker, D.; Agee, C. B.; Zhang, Y. X.
Journal of Geophysical Research-Solid Earth and Planets
(1988)
Issue:
B1
Pages:
313-323
Volume:
93

1987

Novel Compaction Mechanism for Ureilite Meteorites
Walker, D.; Agee, C. B.
Meteoritics
(1987)
Issue:
4
Pages:
521-521
Volume:
22
Diversity and Spatial Zonation of Volcanic-Rocks from the East Pacific Rise near 21-Degrees-N
Hekinian, R.; Walker, D.
Contributions to Mineralogy and Petrology
(1987)
Issue:
3
Pages:
265-280
Volume:
96
Olivine Flotation in a Chondritic Mantle
Agee, C. B.; Walker, D.
Meteoritics
(1987)
Issue:
4
Pages:
314-314
Volume:
22
Experimental Petrology of Alkalic Lavas - Constraints on Cotectics of Multiple Saturation in Natural Basic Liquids
Sack, R. O.; Walker, D.; Carmichael, I. S. E.
Contributions to Mineralogy and Petrology
(1987)
Issue:
1
Pages:
1-23
Volume:
96

1986

Solution Properties of Silicate Liquids from Thermal-Diffusion Experiments
Lesher, C. E.; Walker, D.
Geochimica Et Cosmochimica Acta
(1986)
Issue:
7
Pages:
1397-1411
Volume:
50
Melting Equilibria in Multicomponent Systems and Liquidus Solidus Convergence in Mantle Peridotite
Walker, D.
Contributions to Mineralogy and Petrology
(1986)
Issue:
3
Pages:
303-307
Volume:
92

1985

A Transient Heating Event in the History of a Highlands Troctolite from Apollo-12 Soil 12033
Marvin, U. B.; Walker, D.
Journal of Geophysical Research
(1985)
Pages:
C421-C429
Volume:
90
Xenolith Digestion in Large Magma Bodies
Walker, D.; Kiefer, W. S.
Journal of Geophysical Research
(1985)
Pages:
C585-C590
Volume:
90

1984

A Small Soret Effect in Spreading Center Gabbros
Walker, D.; Delong, S. E.
Contributions to Mineralogy and Petrology
(1984)
Issue:
2
Pages:
203-208
Volume:
85

1983

Komatiites and the Structure of the Archean Mantle - Reply
Nisbet, E. G.; Walker, D.
Earth and Planetary Science Letters
(1983)
Issue:
1-3
Pages:
329-330
Volume:
66
Lunar and Terrestrial Crust Formation
Walker, D.
Journal of Geophysical Research
(1983)
Pages:
B17-B25
Volume:
88
New Developments in Magmatic Processes
Walker, D.
Reviews of Geophysics
(1983)
Issue:
6
Pages:
1372-1384
Volume:
21