Barite Concretions from the Cleveland Shale in North-Central Ohio
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Citation:The Ohio Journal of Science. v79, n5 (September, 1979), 227-232
Concretions composed predominantly of barite occur in the Cleveland Shale of north-centra] Ohio. They have been traced about 8 km through discontinuous exposures along the Vermilion River in Erie and Lorain Counties. These septarian concretions are flattened in the plane of bedding and average 0 cm in length. The concretions contain a black matrix largely composed of fine crystalline barite, surrounded by a fine-grained pyrite rich shell. Septa composed predominantly of more coarsely crystalline barite are generally restricted to the matrix. Although the source of the barium is unknown, the stratigraphic restriction of the occurrence, the sedimentary character of the barite, and the upper Devonian age of the Cleveland Shale suggest that the occurrence may be related to events that formed important bedded barite deposits of mid-Paleozoic age in Arkansas, Nevada and California.
Author Institution: Department of Geology, Kent State University
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