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Devonian Black Shales |
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The type section of the Chattanooga Shale near Hurricane Bridge, DeKalb County, Tennessee. We learned a lot from that section. |
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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. |
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Stream bed with outcrop of Olentangy Shale, alternating black and gray shale beds, Columbus/Ohio. |
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Trace fossils in black shale bed of Olentangy Shale, Columbus/Ohio. |
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Knife-sharp contact between Olentangy (below) and Huron Shale (above). Stream bed, Columbus/Ohio. |
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Lower Huron Shale with large carbonate concretion. Columbus/Ohio. The concretions contain preserved radiolaria (enriched in laminae). |
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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. |
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Yours truly and the Chagrin Shale with the famous Foerstia Zone (marked by ruler), an important biostratigraphic marker. Columbus/Ohio. |
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© Jürgen Schieber, IU Bloomington Department of
Geosciences Last updated: February 08, 2022. |
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