Geology topics
Robert J. Hackman
Publications and source records attributed to Robert J. Hackman.
Photogeologic maps of the Verdure 1, 2, 4, 6, 7, and 8 quadrangles, Utah and Colorado
Base maps compiled by Soil Conservation Service, U.S. Department of Agriculture. These maps are compilations of photogeology and surface geology, Colorado Plateau area, United States. They are also known as: Trace Elements Memorandum Report 399 (Verdure 1) Trace Elements Memorandum Report 406 (Verdure 2) Trace Elements Memorandum Report 438 (Verdure 4) Trace Elements Memorandum Report 405 (Verdure 6) Trace Elements Memorandum Report 395 (Verdure 7) Trace Elements Memorandum Report 403 (Verdure 8)
Photogeologic maps of the Verdure 3 and 5 quadrangles, San Juan County, Utah
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Photogeologic maps of the Verdure 9, 10, 11, 12, 13, 14, 15, and 16 quadrangles, Utah and Colorado
Base maps compiled by Soil Conservation Service, U.S. Department of Agriculture. These maps are compilations of photogeology and surface geology, Colorado Plateau area, United States.
Photogeologic maps of the Bluff 1, 8, and 13 quadrangles, San Juan County, Utah
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