Baculite Mesa, Pierre Shale, WIPS Field Trip: PEOPLE & GEOLOGY, 5/17/2003

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Layer of coarse gravel mixed in darker Pierre Shale approximately 1000 yards east of Tom's Hollow parking area (elev. approx. 4980 ft).
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Layer of coarse gravel mixed in darker Pierre Shale approximately 1000 yards east of Tom's Hollow parking area (elev. approx. 4980 ft).