Arizona Geological Survey Digital Geologic Maps


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Published: 2018
The North Trigo Peaks quandrangle is located eas of the Colorado River, southeast of Blythe, California. The map encompasses most of the northern Trigo Mtns, the upper piedmont of the lower Colorado...
Resource Identifiers: DGM-123

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Published: 2018
The Dragoon Quadrangle is situated between Benson and Willcox in Cochise County, southeastern Arizona. It encompasses the eastern and southern parts of the Little Dragoon Mountains and the flanking...
Resource Identifiers: DGM-125

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Published: 2018
Fort Thomas map area encompasses portions of the Fort Thomas, Geronimo, Bylas, and Gila Peak quadrangles in the Gila River Valley of Graham County, SE Arizona. This geologic map was funded in part...
Resource Identifiers: DGM-126

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Published: 2011
The map area is comprised entirely of late Cenozoic sediments. The map area can be divided into two geomorphic settings. The NW half of the quadrangle includes Yuma Valley and consists of Holocene...
Resource Identifiers: DGM-88 v.1.0

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Published: 2012
Geomorphologic analyses and surficial geologic mapping provide information about the age and type of alluvial deposits on piedmonts that is critical in assessing the character of piedmont landforms...
Resource Identifiers: DGM-75 v.1.0

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Published: 2018
The Redington 7 ½' Quadrangle includes part of the northern San Pedro River and flanking valley fill, as well as two areas of bedrock on the east side of the valley (Figure 1). Production of...
Resource Identifiers: DGM-60

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Published: 2004
The Wagner Wash Well 7.5-minute Quadrangle includes the western fringe of the central White Tank Mountains, the western piedmont of the White Tank Mountains, the south-flowing Hassayampa River, and a...
Resource Identifiers: DGM-38

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Published: 2012
Bedrock and surficial mapping of the Middle Water Spring 7.5' quadrangle, Mohave County, Arizona. . Revised and re-released with funding from the USGS National Geological and Geophysical Data...
Resource Identifiers: DGM-96

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Published: 2012
This geologic map covers part of Yuma Mesa and the Yuma Desert in Yuma County, southeast of Yuma and east of the Colorado River. The Yuma SE quadrangle is entirely covered by late Cenozoic surficial...
Resource Identifiers: DGM-87, v1.0

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Published: 2004
Star Well 7.5-minute quadrangle is located approximately 50 miles northwest of Phoenix and approximately 30 south of Wickenburg, in the Hassayampa Plain, northwestern Maricopa County, Arizona. Most...
Resource Identifiers: DGM-42

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Published: 2005
The geology of the Davis Dam SE quadrangle reflects the complex interplay of the Colorado River and piedmont drainages that flow from the Black Mountains to join the river. The history of the...
Resource Identifiers: DGM-45

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Published: 2018
The Needles NE 7 ½' Quadrangle includes the modern and historical floodplain of the Colorado River and the lower piedmont between the river and the Black Mountains to the east. This quadrangle...
Resource Identifiers: DGM-53 v2.0

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Published: 2018
This map depicts the geology of the Hereford and the northern part of the Stark 7 ½' quadrangles, which are located in the upper San Pedro Valley north of the U.S. - Mexico border. The...
Resource Identifiers: DGM-57 v3.0

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Published: 2009
The Soza Canyon 7 ½′ Quadrangle includes part of the San Pedro River, flanking valley fill, and bedrock on the southwest side of the valley that forms part of the Rincon Mountains (Figure 1)....
Resource Identifiers: DGM-61 v3.0

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Published: 2009
The Wildhorse Mountain 7 ½′ Quadrangle includes part of the central San Pedro River and flanking valley fill, as well as areas of bedrock on both sides of the valley and at the south edge of the...
Resource Identifiers: DGM-62

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Published: 2008
The eastern Black Canyon City 7 ½' Quadrangle and the western Squaw Creek Mesa 7 ½' Quadrangle includes the Interstate 17 corridor where it passes through Black Canyon City and Rock Springs...
Resource Identifiers: DGM-64

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Published: 2009
The Lookout Mountain 7½' Quadrangle includes part of the San Pedro River lowlands, flanking valley fill, and bedrock on the west side of the valley that forms the eastern Black Hills and...
Resource Identifiers: DGM-66, v. 2.0

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Published: 2009
The Mammoth 7½' Quadrangle includes part of the San Pedro River, flanking valley fill, and bedrock on the west side of the valley that forms the Black Hills and the northernmost tip of the...
Resource Identifiers: DGM-67

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Published: 2018
The Clark Ranch 7½' Quadrangle and the western half of the Rhodes Peak 7½' Quadrangle include part of the San Pedro River, flanking valley fill, and bedrock on the east side of the valley...
Resource Identifiers: DGM-68 v2.0

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Published: 2009
The Peppersauce Wash 7 ½' Quadrangle and the southwestern part of the Kielberg Canyon 7 ½' Quadrangle include part of the San Pedro River lowlands, flanking valley fill on both sides of...
Resource Identifiers: DGM-69 v2.0

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