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Structural and sedimentary geology of the area north of Hot Springs Canyon, southern Galiuro Mountains, Cochise County, ArizonaMark, Roger Alan January 1985 (has links)
No description available.
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Sedimentation studies in the vicinity of Willcox Playa, Cochise County, ArizonaPine, Gordon Leroy, 1938- January 1963 (has links)
No description available.
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Late Pleistocene and recent chronologies of Playa lakes in Arizona and New MexicoLong, Austin,1936- January 1966 (has links)
A stratigraphic radiocarbon study at the Wilicox Playa and vicinity in Cochise County, southeastern Arizona has revealed a sedimentary sequence reflecting the lake level chronology of ancient Lake Cochise. The lower green clay was deposited in a lake at least 30 miles long from before 30,000 years ago until about 13,000 years ago. A marl formation which began depositing about 25,000 years ago and continued until the lake diminishe to about its present state 13,000 years ago, indicates a warm, moist climate at that time. The period from 13,000 B.P. (before present) and 11,000 B.P. was one of alluvial deposition north of the playa and channel cutting east of the playa. An upper green clay, 6 to 8 inches thick, represented the final phase of Lake Cochise, lasting from 11,500 B.P. until 10,500 B.P. A thin marl layer was deposited during this phase, indicating warm moist conditions again. The lake rapidly receded, some playa sediments deflated from the surface, and dunes formed north of the playa. Preliminary studies of two playas near Lordsburg, New Mexico and one at the San Augustin Plains, New Mexico, indicate these fluctuations were responding to a general climate change rather than isolated tectonic disturbances. The climate chronology concluded from this study is consistent with known climatic variations in the world.
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Plagioclase zoning profiles of a small pluton in ArizonaWilliams, Paul January 1981 (has links)
No description available.
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Geology of the Gardner Mountain area, Happy Valley quadrangle, Cochise County, ArizonaTrever, Paula Fern January 1983 (has links)
No description available.
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A comparison study of the petrology of fine-grained clastics in mid-Cenozoic age basin deposits, Pima and Cochise Counties, ArizonaRosko, Michael James, 1961- January 1986 (has links)
No description available.
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Cenozoic pisolitic limestones of Pima and Cochise Counties, ArizonaGrimm, Joan Phyllis, 1947- January 1978 (has links)
No description available.
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FACTORS AFFECTING ATTEMPTS TO ESTABLISH COUNTY-WIDE JUNIOR COLLEGES IN SPARSELY POPULATED REGIONSSnider, Richard Harlan, 1921- January 1969 (has links)
No description available.
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Pleistocene geology and geomorphology of the San Pedro River Valley, Cochise County, ArizonaSmith, David George, 1938- January 1963 (has links)
No description available.
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School finance in Cochise CountyByrne, Vincent Raymond, 1912- January 1952 (has links)
No description available.
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