Ontario fracture zone on 1,700-foot level. Summit County, Utah. 1904.
Dates
Date Taken
1904
Summary
Ontario fracture zone on 1,700-foot level, between well defined walls of limestone and porphyry, looking southwest. Summit County, Utah. Circa 1904. Plate 32-B in U.S. Geological Survey. Professional paper 77. 1912.
Summary
Ontario fracture zone on 1,700-foot level, between well defined walls of limestone and porphyry, looking southwest. Summit County, Utah. Circa 1904. Plate 32-B in U.S. Geological Survey. Professional paper 77. 1912.
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