Arizona Geological Survey Digital Geologic Maps


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Published: 2013
Quaternary geology was mapped for three 7.5 minute quadrangles in the Safford Basin, Graham County, AZ: Artesia, Safford, and Thatcher. The geologic mapping is original but informed by previous work...
Resource Identifiers: DGM-106

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Published: 2019
This geologic map of the Twin Buttes 7.5' quadrangle, located south of Tucson in southern Arizona, includes both bedrock and surficial mapping. The map shows the 2120 level in the Twin Buttes...
Resource Identifiers: DGM-31

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Published: 2018
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 Land 7 ½' Quadrangle, which is located in the upper San Pedro Valley a few miles north of the U.S. –Mexico border. The quadrangle covers much of the piedmont...
Resource Identifiers: DGM-49

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Published: 2018
The Saint David 7½' Quadrangle is located approximately 55 miles (88 km) west of downtown Tucson. The map area encompasses the town of Saint David, a portion of the San Pedro River corridor,...
Resource Identifiers: DGM-48 v3.0

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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: 2018
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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Published: 2018
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: 2018
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 Fairbank map area is dominated by an Upper Cretaceous plutonic-volcanic complex that is closely associated with silver-rich, porphyry ore deposits of the Tombstone district (Goodale, 1927; Butler...
Resource Identifiers: DGM-50

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Published: 2018
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: 2018
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: 2018
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: 2018
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

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Published: 2018
This map depicts the geology of the Lewis Springs 7 ½' Quadrangle, which is located in the upper San Pedro Valley a few miles north of the U.S. – Mexico border. The quadrangle covers much of the...
Resource Identifiers: DGM-51

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Published: 2018
Geologic map of largely Quaternary eolian and fluvial deposits of the Yuma East 7.5 quadrangle map, Yuma County, Arizona.
Resource Identifiers: DGM-86, v. 1.0

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Published: 2018
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

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Published: 2018
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: 2018
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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