Figure F12. Detail of Section 333-C0011D-51X-3 (entire section) and smear slide photos from Unit II. A. Mudstone and heterolithic gravel. B. Smear slide (Unit II), showing fragmented Bryozoan shells (Bz), grains of volcanic glass (darker patches are weathered glass) (g), and crystals of orthopyroxene (opx). C. Crystals of orthopyroxene (small) and a larger crystal of hornblende (hb), a heavy mineral common in Unit II.
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