Soft gypseous crust underlain by a 10 to 20 inch layer of high-purity ulexite that was mined in shallow pits now filled with water, Salar de Ascotan.
Dates
Date Taken
1962
Summary
Soft gypseous crust underlain by a 10 to 20 inch layer of high-purity ulexite that was mined in shallow pits now filled with water, Salar de Ascotan. The pond is about 10 feet wide. Antofagasta Province, Chile. Circa 1962. Published in U.S. Geological Survey Professional Paper 811, Figure 29. 1974.
Summary
Soft gypseous crust underlain by a 10 to 20 inch layer of high-purity ulexite that was mined in shallow pits now filled with water, Salar de Ascotan. The pond is about 10 feet wide. Antofagasta Province, Chile. Circa 1962. Published in U.S. Geological Survey Professional Paper 811, Figure 29. 1974.
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