Figure F15. Core images and photomicrographs of siliceous sediment spanning the Paleocene/Eocene boundary, Hole U1409A. A. Smear slide photomicrograph showing examples of nannofossil excursion taxa (Sample 342-U1409A-20X-3, 56 cm). B. Photomicrograph of thin section showing recrystallized foraminifers and a calcified radiolarian (Sample 342-U1409A-20X-3, 69–70 cm). C. Planktonic foraminifer excursion taxa Acarinina africana recovered from the clayey nannofossil chalk below the siliceous unit.
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