Figure 3. Photomicrographs of Site 996 samples. A. Sample 164-996D-5X-CC, 23-25 cm, represents carbonate precipitates of "type 1." Shell fragments and intraclasts, together with void-filling botryoidal aragonite cements are shown. Cross-polarized light; length of view 5.4 mm. B. Sample 164-996D-3X-CC, 9-11 cm, is a micritic carbonate nodule with peloidal texture. Cross-polarized light; length of view 5.4 mm. C. Sample 164-996E-3X-CC, 0-7 cm. Carbonate precipitate of "type 2." Length of view 5 cm. D. Sample 164-996E-3X-CC, 12-15 cm. Botryoidal aragonite shows multiple stages of mineral growth (dark bands parallel to growth direction). Plane-polarized light; length of view 1.3 mm. E. Sample 164-996B-1H-01, 0-5 cm. Micritic carbonate nodule of "type 3" with a distinctly darker rim surrounding a lighter colored core. Cross-polarized light; length of view 5.4 mm. F. Sample 164-996D-3X-CC, 9-11 cm. Authigenic, framboidal pyrite (arrows) occurs as infilling of a foraminifer test. Plane-polarized light; length of view 1.3 mm.