National Geologic Map Database
General Information
- Title: Preliminary stratigraphic cross section showing radioactive zones of the Devonian Black Shales in eastern Ohio and west-central Pennsylvania
- Author(s): Roen, J.B., Wallace, L.G., and de Witt, Wallace
- Publishing Organization: U.S. Geological Survey
- Series and Number: Oil and Gas Investigations Chart OC-82
- Publication Date: 1978
- Map Scale: 1:2,436,923
- Cross Section: Yes
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