National Geologic Map Database
Product Description Page
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Title: Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian basin from Richland County, Ohio, to Rockingham County, Virginia
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Author(s): Ryder, R.T.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Miscellaneous Investigations Series Map I-2264 [1 sheet]
- Publication Date: 1992
- Map Scale: 1:2,640,000
- Cross Section: Yes
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.