Plate 2. Photomicrographs of sand from Sites 976 and 977. 1. Quartz grains. Sample 161-976B-3H-1, 72-74 cm. Scale bar is 0.025 mm. 2. Calcite-cemented sandstone with silty shale/slate fragments, and chert and quartz grains. Crossed nicols. Sample 161-976B-51X-1, 45-47 cm. Scale bar is 0.05 mm. 3. Calc-schist fragment. Sample 161-976B-72X-CC, 16-18 cm. Scale bar is 0.1 mm. 4. Vesicular glass (pumice) altered to green clay minerals. Sample 161-976B-72X-CC, 16-18 cm. Scale bar is 0.05 mm. 5. Quartz, quartz-mica tectonite (schist), foraminifers and mica flake. Sample 161-977A-22X-CC, 19-20 cm. Scale bar is 0.025 mm. 6. Fragment of fractured, radiolarian-bearing (round and conical white spots) argillaceous chert. Sample 161-977A-57X-CC, 33-34 cm. Scale bar is 0.1 mm.

Plate 2. Photomicrographs of sand from Sites 976 and 977. 1. Quartz grains. Sample 161-976B-3H-1, 72-74 cm. Scale bar is 0.025 mm. 2. Calcite-cemented sandstone with silty shale/slate fragments, and chert and quartz grains. Crossed nicols. Sample 161-976B-51X-1, 45-47 cm. Scale bar is 0.05 mm. 3. Calc-schist fragment. Sample 161-976B-72X-CC, 16-18 cm. Scale bar is 0.1 mm. 4. Vesicular glass (pumice) altered to green clay minerals. Sample 161-976B-72X-CC, 16-18 cm. Scale bar is 0.05 mm. 5. Quartz, quartz-mica tectonite (schist), foraminifers and mica flake. Sample 161-977A-22X-CC, 19-20 cm. Scale bar is 0.025 mm. 6. Fragment of fractured, radiolarian-bearing (round and conical white spots) argillaceous chert. Sample 161-977A-57X-CC, 33-34 cm. Scale bar is 0.1 mm. Click on image for enlargement.