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A Resume of Arizona
by N.H. Darton, Geologist, United States Geological Survey
Prepared under a cooperative agreement between
The Arizona Bureau of Mines and The United States Geological Survey,
published by the University of Arizona, Tucson, Arizona, 1925, 298 pages.
Arizona Bureau of Mines Bulletin 119
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This historic document describes the geology and stratigraphy
of Arizona as observed by the geologists who first examined,
measured and named the layers of rock in Arizona.