Plate 1. Photomicrographs of sand from Site 974. 1. Irregular-shaped (vesicular?) brown microlitic-volcanic-lithic fragment. Dark color caused in part by red stain, which reflects a high Ca content of glass. Sample 161-974B-1H-3, 139-140 cm. Scale bar is 0.025 mm. 2. Stretched pumice (vertical in center). Pumice takes light-pink (Ca) and yellow (K) stain. Sample 161-974B-1H-3, 139-140 cm. Scale bar is 0.05 mm. 3. Stained potassium feldspar (top center), quartz (bottom center), shale with microquartz vein (left), polycrystalline quartz (right), and bioclastic debris. Sample 161-974B-2H-4, 63-65 cm. Scale bar is 0.05 mm. 4. Same view as in C, but with crossed nicols. Sample 161-974B-2H-4, 63-65 cm. Scale bar is 0.05 mm. 5. Red algae fragment (upper left), stained plagioclase (lower left), vertically oriented polycrystalline mica and brown biotite (center), green amphibole (upper right), and quartz (right). Sample 161-974B-2H-4, 63-65 cm. Scale bar is 0.05 mm. 6. Coarse quartz-biotite schist fragment. Sample 161-974B-22X-CC, 28 cm. Scale bar is 0.2 mm.

Plate 1. Photomicrographs of sand from Site 974. 1. Irregular-shaped (vesicular?) brown microlitic-volcanic-lithic fragment. Dark color caused in part by red stain, which reflects a high Ca content of glass. Sample 161-974B-1H-3, 139-140 cm. Scale bar is 0.025 mm. 2. Stretched pumice (vertical in center). Pumice takes light-pink (Ca) and yellow (K) stain. Sample 161-974B-1H-3, 139-140 cm. Scale bar is 0.05 mm. 3. Stained potassium feldspar (top center), quartz (bottom center), shale with microquartz vein (left), polycrystalline quartz (right), and bioclastic debris. Sample 161-974B-2H-4, 63-65 cm. Scale bar is 0.05 mm. 4. Same view as in C, but with crossed nicols. Sample 161-974B-2H-4, 63-65 cm. Scale bar is 0.05 mm. 5. Red algae fragment (upper left), stained plagioclase (lower left), vertically oriented polycrystalline mica and brown biotite (center), green amphibole (upper right), and quartz (right). Sample 161-974B-2H-4, 63-65 cm. Scale bar is 0.05 mm. 6. Coarse quartz-biotite schist fragment. Sample 161-974B-22X-CC, 28 cm. Scale bar is 0.2 mm. Click on image for enlargement.