Arizona Geological Survey Open File Reports


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Published: 1994
The Palomas Mountains are located approximately 70 miles northeast of Yuma, Arizona, and about 15 miles north of the town of Dateland in eastern Yuma County (Figure 1). Across a narrow valley to...
Resource Identifiers: OFR-94-09

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Published: 1994
Two active alluvial fans in the tectonically quiescent region of southern Arizona are composed of discontinuous ephemeral stream systems characterized by alternating channelized reaches and...
Resource Identifiers: OFR-94-12

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Published: 1994
Earth fissures are tension cracks that form in response to land subsidence caused by groundwater pumping. Land subsidence is common in Arizona's alluvial basins, where extensive groundwater...
Resource Identifiers: OFR-94-11

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Published: 1990
Virtually all rocks and soils contain uranium, which undergoes radioactive decay into hazardous radon gas. The average uranium concentration of crustal rocks is 2 to 3 parts per million (ppm)....
Resource Identifiers: OFR-90-05

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Published: 1988
Uranium-vanadium deposits have been discovered and mined in the Lukachukai Mountains, a high, rugged northwest spur of the Chuska Mountains in northeastern Arizona. All of the economic deposits...
Resource Identifiers: OFR-88-19

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Published: 1988
The Vulture Mountains, located directly southwest of Wickenburg in central Arizona, contain one of Arizona's premier historic gold deposits, the Vulture Mine. This mine yielded about 340,000...
Resource Identifiers: OFR-88-10

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Published: 1994
The principal geologic feature of the Big Hom and Belmont Mountains is a complexly faulted and tilted series of mostly Miocene volcanic rock that record a period of Middle Tertiary magmatism and...
Resource Identifiers: OFR-94-15

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Published: 1994
The Tank Mountains of southwestern Arizona are a west-northwest trending range which represent an approximately 30 km-Iong extension of a southeastern arm of the Kofa Mountains. On all other sides...
Resource Identifiers: OFR-94-08

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Published: 1994
Large-scale continental extension significantly rearranged the distribution of pre-Tertiary rocks in southern and western Arizona during Miocene time [Spencer and Reynolds, 1989a]. Topography...
Resource Identifiers: OFR-94-05

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Published: 1993
This map depicts the distribution of geomorphic surfaces and associated alluvium of the southern and southwestern piedmont of the Tortolita Mountains in Pima County, northwest of Tucson, Arizona....
Resource Identifiers: OFR-93-14

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Published: 1993
One of the fastest growing areas of Arizona is the eastern part of the Phoenix Basin near the communities of Chandler, Gilbert, Mesa, and Apache Junction. Much of this development has occurred on...
Resource Identifiers: OFR-93-15

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Published: 1993
The central Verde River is one ofthe primary perennial, free-flowing streams in Arizona. Portions ofthe river have been significantly impacted by human activities, and its future flow may be...
Resource Identifiers: OFR-93-04

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Published: 1988
Forty-three years ago, after the detonation of three atomic bombs in 1945, the public became aware of atomic energy and the Manhattan Project. The Manhattan Project was the code name used by the...
Resource Identifiers: OFR-88-02

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Published: 1994
This report presents the results of surficial geologic mapping of the Chandler Heights and Sacaton NE, 7.5-minute quadrangles located in the Santan Mountain piedmont area (herein referred to as...
Resource Identifiers: OFR-94-07

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Published: 1993
Geologic map of Saddle Mountain, Maricopa County, Arizona. Report and one map sheet, map scale 1:24,000.
Resource Identifiers: OFR-93-06

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Published: 1986
Geologic map of the Lincoln Ranch Basin, eastern Buckskin Mountains, western Arizona. Report and one map sheet, map scale 1:24,000.
Resource Identifiers: OFR-86-02

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Published: 1992
Detailed geologic map of the Upper Apache Wash Area, central southern Plomosa Mountains, west-central Arizona. Report, one map sheet, map scale 1:12,000, and cross-sections.
Resource Identifiers: OFR-92-02

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Published: 1994
Surficial and environmental geology of the Sierra Vista Area, Cochise County, Arizona. Report and one map sheet, map scale 1:24,000.
Resource Identifiers: OFR-94-06

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Published: 1992
Geology and mineral resources of the Sierra Estrella, Maricopa County, Arizona. Report and one map sheet, map scale 1:50,000.
Resource Identifiers: OFR-92-15

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Published: 1994
Radon gas, which is produced by the radioactive decay of uranium, can accumulate in homes to levels that are considered hazardous by the U.S. Environmental Protection Agency. Hazardous indoor-radon...
Resource Identifiers: OFR-94-25

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