Arizona Geological Survey Open File Reports


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Published: 1998
This report is a compilation of available data on Quaternary faults in Arizona as of the summer of 1998. These data were compiled as part of a effort to compile data and map information on...
Resource Identifiers: OFR-98-24

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Published: 1998
The Superstition volcanic field or Superstition - Superior volcanic field (Sheridan, 1978) of central Arizona has had a long, complex history of geological investigation. Starting along its eastern...
Resource Identifiers: OFR-98-27

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Published: 1999
This map documents the complex deformation in a northeast-trending belt of steeply dipping Paleozoic strata in the footwall of the Harquahala thrust in the Socorro Mine-White Marble mine area of the...
Resource Identifiers: OFR-99-09

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Published: 1999
This report provides baseline information on the physical characteristics of the Santa Cruz River to be used by the Arizona Stream Navigability Commission in its determination of the potential...
Resource Identifiers: OFR-99-13

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Published: 1999
AZGS staff prepare and provide geologic maps, reports, and related information to interested or concerned citizens, governmental agencies, businesses, legislators and committee staff, teachers, and...
Resource Identifiers: OFR-99-27

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Published: 1999
This report is a brief summary of the geology and mineral resources of the Tonto Basin, prepared in conjunction with a mineral potential report for a proposed land withdrawal in the Theodore...
Resource Identifiers: OFR-99-11

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Published: 1999
The U-Pb data described in this report were produced to determine the ages of granitic rocks in Arizona and the timing of metamorphic and deformational events. Two developments emerge from the data...
Resource Identifiers: OFR-99-05

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Published: 1999
The Picture Mountain quadrangle is centered on the southwest flank of the Sierra Ancha (see Figure 1). The geology of the area is dominated by the middle Proterozoic Apache Group and the diabase...
Resource Identifiers: OFR-99-23

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Published: 1999
Mafic dikes and sills intrude sediments of the Late Jurassic (Early Cretaceous?) lower McCoy Mountains Formation in western Arizona. Some units show evidence for intrusion into wet, unconsolidated...
Resource Identifiers: OFR-99-01

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Published: 1999
The Ninetysix Hills of Pinal County, Arizona, consist of a series of low hills and pediment situated about half way between the towns of Florence and Catalina, and are about 70 km (45 mi.) north of...
Resource Identifiers: OFR-99-20

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Published: 1999
The Samaniego Hills are a low series of hills composed of flat-lying to gentlydipping early Miocene and possibly late Oligocene lava flows interbedded with thin units of volcaniclastic and locally...
Resource Identifiers: OFR-99-17

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Published: 1999
Windy Hill quadrangle is located in SE part of Tonto Basin and includes bedrock on both sides of the Basin. Bedrock geology is dominated by Middle Proterozoic Apache Group and by overlying lower...
Resource Identifiers: OFR-99-12

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Published: 1999
The Bill Williams River system drains more than 5200 mi2 of west-central Arizona. It is the largest tributary of the Colorado River between the Virgin River and the Gila River. However, the name...
Resource Identifiers: OFR-99-04

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Published: 1999
Geologic Map of the Northwestern Part of the Greenback Creek 7.5' Quadrangle, Gila County, Arizona
Resource Identifiers: OFR-99-10

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Published: 1999
Three wells drilled in the Tonto Basin have been studied to assist in the interpretation of subsurface geology of the basin. These are the Forest Service Windy Hill Test #1, drilled in 1991, the...
Resource Identifiers: OFR-99-07

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Published: 1999
Water quality issues are becoming increasingly important in the upper Gila River drainage area as competition among municipal and industrial water use, agriculture, environmental concerns, and...
Resource Identifiers: OFR-99-03

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Published: 1999
The Sawtooth Mountains are a small (45 km2 ), low-relief (250 m), yet rugged range composed of essentially flat-lying, Mid-Tertiary volcanic rocks. Along with the West Silver Bell Mountains, which...
Resource Identifiers: OFR-99-16

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Published: 1999
This field trip focuses on subsidence features caused by removal of groundwater at rates greater than natural recharge in the Picacho basin. Land subsidence is common in Arizona's alluvial...
Resource Identifiers: OFR-99-26

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Published: 1999
The St. Johns - Springerville area consists of about 700 mi2 including Townships 9 through 12 North and Ranges 28 through 31 East in Apache Co., Arizona, and Townships 1 South through 3 North and...
Resource Identifiers: OFR-99-02

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Published: 1999
We have completed initial paleoseismologic investigations to evaluate the recency and size of paleoearthquakes and long-term slip rates on the Hurricane fault in southern Utah and northern Arizona...
Resource Identifiers: OFR-99-8

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