Thursday, May 23, 2013

Cap Mountain Sandstone

A highlight of any geology field trip in this area is this glauconite-rich, fossiliferous sandstone. Some of the fossils here, some trilobites and inarticulate brachiopods, made their shells out of calcium phosphate, rather than calcium carbonate. Great examples of a variety of sedimentary bed forms in this outcrop as well. 

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