STOP 4 - TRIP ONE
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Martinsburg - Mid Ordovician
Geology 364 - Stratigraphy and Basin Analysis
Dept. of Geology and Environmental Studies
James Madison University
Lynn S. Fichter




     Top picture is outcrop seen from the vans. Interbedded sandstones and shales, maintaining uniform thickness over long distances.
     Close ups of the bedding. Graded bedding visible in many of the sandstones, as well as high velocity laminations. Occasional small trough cross laminations. Scours on the bottom, although they can be hard to see without a bedding surface.
     Note the axial plane cleavage in the bottom two picures. (It is not cross bedding.)
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