Work on Cores

Geographic locations of "red beds", sources of hematite-stained grains, and sites of cores found with hematite-stained grains and basaltic (volcanic) glass. Arrows show ocean currents in which drifting icebergs would probable become entrained. Also shown on the map are known "red beds", the source of the hematite-stained grains. (Map prepared by Gerard Bond and Rusty Lotti Bond, Lamont-Doherty Earth Observatory).