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Devonian Black Shales Outcrop Photos

Devonian Black Shales Outcrop Photos

Devonian Black Shales in Tennessee, Kentucky, and Ohio

A close-up scientific image shows a dark, teardrop-shaped floccule structure at the bottom of a flume, with a white arrow indicating the direction of flow and a 5 cm scale bar.

The type section of the Chattanooga Shale near Hurricane Bridge, DeKalb County, Tennessee. We learned a lot from that section.

A scientific diagram shows three magnified images of in-situ quartz grains, which were formed by the early diagenetic silicification of Tasmanites cysts and indicate a paleoproductivity source.

Exposure of New Albany Shale near along I-65, near Bernheim Forest/KY. This section is described in the guidebook for the 2004 SEPM field trip.

A geologic outcrop in an unknown location shows a man with a beard and binoculars standing on a rock ledge next to a small stream.

Stream bed with outcrop of Olentangy Shale, alternating black and gray shale beds, Columbus/Ohio.

A top-down view of a rock outcrop shows a large, crescent-shaped trace fossil with a geologic hammer for scale.

Trace fossils in black shale bed of Olentangy Shale, Columbus/Ohio.

A photograph shows a large rock outcrop with different horizontal layers of shale, with a street light on the right and a road at the bottom.

Knife-sharp contact between Olentangy (below) and Huron Shale (above). Stream bed, Columbus/Ohio.

A scientific diagram from an IU Shale Research study shows a rock outcrop with a geologic hammer for scale, highlighting a channelized sandstone with a scoured base.

Lower Huron Shale with large carbonate concretion. Columbus/Ohio. The concretions contain preserved radiolaria (enriched in laminae).

A photograph of a rock outcrop shows a geologic hammer resting on a green-tinted rock surface, with a small stream of water dripping down the rock face.

Erosional contact (marked by hammer tip) within lower Huron Shale. Shale below weathers blocky, shale above weathers fissile/papery. Joint orientation also differ between the two shale units.

A geological photograph shows a geologist with a beard, wearing an orange vest and holding a camera, standing in front of a rock outcrop in a forest, with a measuring tape visible on the rock face.

Yours truly and the Chagrin Shale with the famous Foerstia Zone (marked by ruler), an important biostratigraphic marker. Columbus/Ohio.