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General Information

  • Title: Thickness and lithology of Upper Ordovician and Lower and Middle Silurian rocks in the Michigan Basin
  • Author(s): Cohee, G.V.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Oil and Gas Investigations Chart OC-33
  • Publication Date: 1948
  • Map Scale: 1:4,000,000
  • Cross Section: None
  • North Latitude: 47° 0' 0" N (47.0000)
  • South Latitude: 40° 0' 0" N (40.0000)
  • East Longitude: 81° 0' 0" W (-81.0000)
  • West Longitude: 89° 0' 0" W (-89.0000)
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