Figure F47. Thin section photomicrographs of micritic limestone, Site U1375. A. Micritic limestone from Subunit IIA containing a few planktonic foraminifers (top) overlying volcaniclastic sandstone fragment (bottom) (Sample 330-U1375A-2R-1, 67–70 cm; Thin Section 225) (plane-polarized light). Volcanic glass within the volcaniclastic sandstone is cemented by calcite. Arrows point toward top. B. Micritic limestone from Subunit IIA containing (1) benthic foraminiferal, (2) bryozoan, (3) echinoderm, and (4) planktonic foraminiferal fragments (Sample 330-U1375A-2R-1, 26–29 cm; Thin Section 224) (plane-polarized light). The highly fossiliferous limestone including foraminifers is only overlying the less fossiliferous one containing macrofossil and volcaniclastic fragments. White arrow points toward top.
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