Plate 3. Photomicrographs of sand from Site 977 and Spanish beaches. 1. Granitic or gneissic fragment composed of plagioclase feldspar (bottom of grain) and potassium feldspar (top of grain). Feldspar is etched and stained; Sample 161-977A-57X-CC, 33-34 cm. Scale bar is 0.1 mm. 2. Micrite sedimentary lithic fragment with carbonate veins. Sample 161-977A-57X-CC, 33-34 cm. Scale bar is 0.1 mm. 3. Quartz-mica tectonite fragments (top and center on left), garnet (center), and carbonate lithic fragment (right). Beach sample (#3) taken near Almerķa. Scale bar is 0.1 mm. 4. Quartz-mica tectonite fragments and monocrystalline and polycrystalline quartz fragments. Beach sample (#5) taken between Almerķa and Malaga. Scale bar is 0.2 mm. 5. Serpentinite fragments (center). Crossed nicols. Beach sample (#9) taken west of Malaga. Scale bar is 0.1 mm. 6. Silty shale fragment (lower left), limestone fragment (upper left), quartz-mica tectonite fragment (upper right) and quartz grains. Beach sample (#6) taken west of Malaga. Scale bar is 0.1 mm. Click on image for enlargement.