National Geologic Map Database
General Information
- Title: Correlation and geographic extent of some Middle and Upper Devonian and Lower Mississippian black shales in the Appalachian basin
- Author(s): de Witt, Wallace, Jr., and Roen, J.B.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Bulletin 1605-A [p. A45-A57]
- Larger Work: Stratigraphic notes, 1984
- Publication Date: 1985
- Map Scale: 1:7,500,000
- Cross Section: None
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