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Carbonaceous and Ordovician rocks cut on Southern railway half a mile east of Calera. Shelby County, Alabama. 1924.

Dates

Date Taken
1924

Summary

Carbonaceous and Ordovician rocks cut on Southern railway half a mile east of Calera. The Athens shale (Ordovician) is overlain by the Frog Mountain sandstone (Devonian), 4 inches thick; clay that may be of Devonian age in the middle; and Fort Payne chert (Mississippian) at the right. There is a great stratigraphic break between the Frog Mountain sandstone and Athens shale. Looking northeast. Shelby County, Alabama. 1924. Plate 10 in U.S. Geological Survey. Folio 226. 1940.

Contacts

Data Owner :
U.S. Geological Survey
Photographer :
Butts, Charles

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Identifiers

Type Scheme Key
name photoLibrary butc0741
number photoLibrary 5439
batch photoLibrary btch334
number_in_book photoLibrary 741

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