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Gigapans

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  1. The Keyser Limestone is the lowest formation of the late Silurian to early Devonian Helderburg Group. It records stable platform deposits which accumulated in the quiet period between the Taconian and Acadian orogenies. This sample was collected and contributed by Dr. Michael Mengason.

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  2. Brachiopod body fossils in the Ridgeley Member of the Old Port Formation, a Devonian sandstone (quartz arenite) which outcrops in Maryland, Pennsylvania, and West Virginia. This outcrop is in a railroad cut on the Great Allegheny Passage, approximately one mile northeast of the intersection of Cash Valley Road with ...

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      1
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      Total Views
      437
      Explore Score
      1