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You are browsing the archive for 2011 December 08.

8 December 2011

Currents in the Devonian deep

This blog has been noticeably photo deficient lately! Time to remedy that. Today, I offer you a couple of shots of the Brallier Formation (shale / fine-grained sandstone) in West Virginia’s Valley & Ridge province, a few miles northwest of Moorefield, on the newly-opened section of New Route 55. The Brallier was deposited in a deep, low-oxygen portion of the epeiric Kaskaskia Sea. Flute casts: Cross-bedding: These sedimentary rocks were …

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