Figure F12. Thin section photomicrographs of components comprising oolitic limestone, Hole U1349A (Section 324-U1349A-9R-1; stratigraphic Subunit IVb). A. Rounded biogenic and volcaniclastic components in limestone. B. Ooid grain (center left) showing concentric laminated outer rim. C. Rounded biogenic grains with cemented outer rims. Biogenic fragment in top left corner may be bryozoan. D. Volcaniclastics including altered glass (brown) and lithic basaltic clast (black). E. Rounded biogenic components including a benthic foraminifer (top center). A, B, D and E are under cross-polarized light; C is under plane-polarized light.
Previous | Close | Next | Top of page