National Geologic Map Database
Product Description Page
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Title: Sections and maps of Lower Ordovician and Cambrian rocks in the Michigan Basin, Michigan, and adjoining areas
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Author(s): Cohee, G.V.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Oil and Gas Investigations Chart OC-9
- Publication Date: 1945
- Map Scale: 1:5,000,000
- Cross Section: Yes
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.