Arizona Geological Survey Open File Reports


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Published: 1991
The eastern Gila Bend Mountains, Maricopa County, Arizona, are composed of Early Proterozoic crystalline rocks and overlying mid-Tertiary continental clastic and volcanic rocks of the Sil Murk...
Resource Identifiers: OFR-91-05

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Published: 1991
A detailed paleoflood investigation was performed in five canyons supplying flood flows to the piedmont of the Tortolita Mountains. The results of the study reveal large discrepancies between...
Resource Identifiers: OFR-91-06

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Published: 1991
Information requested. Information and assistance were provided to more than 3,900 persons who wrote, telephoned, or visited the Arizona Geological Survey (AZGS) to buy publications, use the...
Resource Identifiers: OFR-91-12

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Published: 1991
These nine maps depict the distribution and general ages of Quaternary geomorphic surfaces and associated alluvial deposits surrounding the White Tank Mountains, on the western margin of the...
Resource Identifiers: OFR-91-08

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Published: 1991
Assessment of the character of flood hazards and the extent of flood-prone areas on the piedmonts of Arizona is an increasingly important concern to floodplain managers as urban areas continue to...
Resource Identifiers: OFR-91-10

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Published: 1991
The character of flooding and the extent of flood-prone areas on the southern piedmont of the Tortolita Mountains have been disputed by local and federal flood plain management officials since at...
Resource Identifiers: OFR-91-11

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Published: 1991
Earth fissures are one of the geologic hazards that have damaged the facilities of the Central Arizona Project (CAP). Earth fissures exist along at least two reaches of the Tucson aqueduct, and more...
Resource Identifiers: OFR-91-01

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Published: 1992
Geologic Map of the Red Hill Quadrangle, La Paz County, Arizona. Scale 1:24,000.
Resource Identifiers: OFR-92-14

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Published: 1992
Geologic Map of the Imperial Reservoir Quadrangle, Yuma County, Arizona, and Imperial County, California, Scale 1:24,000
Resource Identifiers: OFR-92-11

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Published: 1992
The Bullard mineral district is one of approximately 15 mineral districts in west-central Arizona and southeastern California that are related to large-displacement, regionally low-angle normal...
Resource Identifiers: OFR-92-01

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Published: 1992
Separate maps show the ranges of values for each parameter. Polygons enclose areas where parameter values are within a range specified by the DRASTIC system, and a numerical rating is assigned to...
Resource Identifiers: OFR-92-13

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Published: 1992
Geologic maps have traditionally emphasized bedrock rather than unconsolidated sediments, the latter usually being lumped into the generic category of "Tertiary and/or Quaternary alluvium...
Resource Identifiers: OFR-92-07

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Published: 1992
The area described in this study includes Cemetery Ridge, the Clanton Hills, and the westernmost Gila Bend Mountains (picacho Hills), La paz and Yuma counties, Arizona. The study area (Fig. 1)...
Resource Identifiers: OFR-92-04

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Published: 1992
The area described in this study includes the eastern Eagletail Mountains, Maricopa, La Paz, and Yuma counties, Arizona. The study area encompasses all of the Eagletail Mountains East Quadrangle (1...
Resource Identifiers: OFR-92-03

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Published: 1992
The principal objective of this study is to evaluate the western piedmont of the McDowell Mountains to determine which areas may be subject to alluvial-fan flooding. The McDowell Mountains piedmont...
Resource Identifiers: OFR-92-08

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Published: 1992
Fission-track thermochronologic data have the potential to reveal aspects of the timing, rate, and style of crustal extension tectonics. Previous fission-track studies in the footwalls of detachment...
Resource Identifiers: OFR-92-09

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Published: 1993
Earth fissures are a geologic hazard that could interrupt delivery of water to users of the Central Arizona Project (CAP) Tucson Aqueduct. Since the first earth fissure reported in Arizona was...
Resource Identifiers: OFR-93-11

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Published: 1993
The Painted Rock Mountains are about 15 miles west of the town of Gila Bend in southwestern Maricopa County, Arizona (Fig. 1). The narrow north-south trending mountain range is approximately 12...
Resource Identifiers: OFR-93-07

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Published: 1993
In 1992 the Arizona Geological Survey (AZGS) organized a repository in which drill core that the AZGS has accumulated through donations is stored and available for public inspection. The repository...
Resource Identifiers: OFR-93-02

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Published: 1993
This index shows the locations of geologic maps in the Mesa 10 x 2 0 Quadrangle. Three types of maps are included, as follows: Sheet 1, published maps; Sheet 2, unpublished thesis and dissertation...
Resource Identifiers: OFR-93-19

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