69ARr27
, Mt Michelson
, In a dark gray silty shale approx. 50' below its contact with overlying Ignek(?) sandstone.
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69ARr219
, Mt Michelson
, Ignek(?) sandstone from the base of an exposure of 40' of silt and sandstones overlain by approximately 100 feet of silty dark-gray to black shale.
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worm tubes probably belong to Ditrupa
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