English: Shales in the Devonian of Kentucky, USA.

This is an outcrop of the New Albany Shale, a Devonian-aged formation in Kentucky, Indiana, Illinois, and eastern Missouri. The unit is dominated by dark-colored marine mudshales of Late Devonian age. These black shales were generally deposited in a moderately deep, anoxic seafloor environment. This was a widespread lithofacies during the Late Devonian's Global Anoxia Event. The New Albany Shale is equivalent to the Ohio Shale, the Antrim Shale, and the Chattanooga Shale in surrounding states. The New Albany Shale's member terminology varies from region to region.

The upper blackish part of this cut consists of the Huron Shale Member (also known as the Clegg Creek Member). The thin, slightly lighter-colored part in the middle is the Camp Run Member. Below that are Trousdale / Blocher Member dolomitic shales. At the base of the cut, unconformably underlying the Trousdale, is a Middle Devonian carbonate unit called the Duffin Limestone.

The Camp Run Member here downlaps onto Trousdale beds. The top of the Camp Run is noticeably truncated.

Stratigraphy: Huron Shale / Clegg Creek Member over the Camp Run Member over the Trousdale / Blocher Member, New Albany Shale / Ohio Shale / Chattanooga Shale, upper Middle Devonian to Upper Devonian & Duffin Limestone, Middle Devonian

Locality: roadcut on the eastern side of Route 127, just south of Bowens Road intersection & just north of bridge over Harris Creek, ~3 miles south of Junction City, northwestern Lincoln County, central Kentucky, USA (37˚ 32.619’ North latitude, 84˚ 48.135’ West longitude) (= Stop 3A of Schieber & Lazar, 2004, pp. 24-29)

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Info. at:

Schieber, J. & R. Lazar (eds.). 2004. Devonian black shales of the eastern U.S. New insights into sedimentology and stratigraphy from the subsurface and outcrops in the Illinois and Appalachian Basins. Field Guide for the 2004 Annual Field Conference of the Great Lakes Section of SEPM. Indiana Geological Survey Open-File Study 04-05. 90 pp.