Figure F4. Microfacies of sediments from Challenger Mound. A. Bioturbation (white arrow) of quartzose wackestone (Sample 307-U1317A-12H-1, 135–140 cm). B. Quartz (black arrow), planktonic foraminifers, and glauconite (white arrow) (Sample 307-U1317A-1H-1, 135–140 cm). C. Planktonic foraminifers (white arrow) (Sample 307-U1317A-5H-5, 145–150 cm). D. Echinoid remain (white arrow) (Sample 307-U1317A-13H-3, 90–95 cm). E. Benthic foraminifers (black arrow) and echinoid spine (white arrow) (Sample 307-U1317A-4H-1, 135–140 cm). F. Coral fragment (black arrow) and bioturbation (white arrow) in quartzose packstone abundant in planktonic foraminifers (Sample 307-U1317A-1H-1, 135–140 cm).
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