Reconnaissance geologic map of the Adel quadrangle, Lake, Harney, and Malheur counties, Oregon

Walker, George Walton, 1921-

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  • Relief shown by contours and spot heights. "Base from Army Map Service, 1:250,000, 1958; limited revision by U.S. Geological Survey, 1962."
  • "Based on reconnissance [sic] and photogeologic mapping by G.W. Walker, 1959-62, C.A. Repenning, 1961-62, and D.H. Lindsley, 1959 and 1961."
  • Includes 2 geologic sections, "Tectonic sketch map," map index to geologic maps used, fossil-locality list, and location map.
  • "References cited."
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