2010 GSA Annual Meeting Field Trip #425

Large-scale lateral accretion in a channel-fill deposit, Castlegate Sandstone, East Bowl, Thompson Pass. Note the two geologists for scale. Two prominent coal beds occur in the lower part of the Castlegate Sandstone cliff-forming section, while shallow marine sandstones and heterolithic facies of the Desert Member comprise the lowermost cliff-forming succession. Photo © S.A.J. Pattison.
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