Floor and walls of southern head, Evans Amphitheater. Lake County, Colorado. 1929.
Dates
Date Taken
1929
Summary
Floor and walls of southern head, Evans Amphitheater; rock glacier in left middle distance; laccolithic sill of Dyer Mountain in background; note later white porphyry dike in saddle and Sacramento porphyry in Dyer Mountain; early White porphyry; Cambrian; Manitou dolomite; Peerless shale; Dyer dolomite; Leadville dolomite; Weber (?) sandstone. Lake County, Colorado. 1929. Figure 75, with graphics, in U.S.Geological Survey Professional paper 235. 1953.
Summary
Floor and walls of southern head, Evans Amphitheater; rock glacier in left middle distance; laccolithic sill of Dyer Mountain in background; note later white porphyry dike in saddle and Sacramento porphyry in Dyer Mountain; early White porphyry; Cambrian; Manitou dolomite; Peerless shale; Dyer dolomite; Leadville dolomite; Weber (?) sandstone. Lake County, Colorado. 1929. Figure 75, with graphics, in U.S.Geological Survey Professional paper 235. 1953.
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