Figure F12. Photomicrographs of pyritized and ash-filled burrows, Subunit IIA and Unit III. A. Vertical pyritized burrow, Subunit IIA (interval 316-C0007D-19R-2, 72–73 cm). B. Pyritized Chondrites, Unit III (Section 316-C0007D-25R-1, 84 cm). C. Ash-filled Chondrites, Unit III (interval 316-C0007D-25R-3, 106–109 cm).
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