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Dacitic ash-flow sheet near Superior and Globe, Arizona
Donald W. Peterson
1961, Open-File Report 61-119
Remnants of a dacitic ash-flow sheet near Globe, Miama, and Superia, Arizona cover about 100 square miles; before erosion the area covered by the sheet was at least 400 square miles and perhaps as much as 1,500 square miles. Its maximum thickness is about 2,000 feet, its average thickness is...
Short papers in the geologic and hydrologic sciences, articles 147-292
Water Resources Division, U.S. Geological Survey
1961, Professional Paper 424-C
The scientific and economic results of work by the United States Geological Survey during the fiscal year 1961, the 12 months ending June 30, 1961, is being summarized in four volumes. This volume includes 146 short papers on subjects in the fields of geology, hydrology, and related sciences, prepared by...