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National Geologic Map Database

General Information

  • Title: Geologic map of the Portal quadrangle and vicinity, Cochise County, Arizona
  • Author(s): Drewes, Harald, Du Bray, E.A., and Pallister, J.S.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Miscellaneous Investigations Series Map I-2450
  • Publication Date: 1995
  • Map Scale: 1:24,000
  • Cross Section: Yes
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.