Basal contact of andesite with sandstone of the Thaynes formation. Summit County, Utah. 1904.
Dates
Date Taken
1904
Summary
Basal contact of andesite with sandstone of the Thaynes formation, exposure along wall of tunnel northeast of Park City district, water worn pebbles enclosed at base of tuffaceous material. Summit County, Utah. Circa 1904. Plate 10-B in U.S. Geological Survey. Professional paper 77. 1912.
Summary
Basal contact of andesite with sandstone of the Thaynes formation, exposure along wall of tunnel northeast of Park City district, water worn pebbles enclosed at base of tuffaceous material. Summit County, Utah. Circa 1904. Plate 10-B in U.S. Geological Survey. Professional paper 77. 1912.
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