Thursday, December 09, 2004

Cincinnati Arch

Geologic anticlinal (archlike) structure influential during the Paleozoic Era (540 to 245 million years ago); it existed as a persistent low-lying land area flanked by seas covering a large part of the continent while connected with the ocean. The axis of the Cincinnati Arch extends southward from Ohio to Tennessee. Separated by a structural saddle, its southward extension

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