Geologic Map of the McGrew Spring 7.5' Quadrangle, Cochise County, Arizona, v. 2.0

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Author
Shipman, T.C.
Ferguson, C.A.
Issue Date
2020
Keywords
Arizona Geological Survey Digital Geologic Maps
San Pedro River
McGrew Spring
Arizona
Cochise County
Whetstone Mountains
Kartchner Caverns
surficial geology
bedrock geology
digital geologic map

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Citation
Shipman, T.C., and Ferguson, C.A., 2020, Geologic Map of the McGrew Spring 7.5' Quadrangle, Cochise County, Arizona: Arizona Geological Survey Digital Geologic Map DGM-35, version 2.0, map scale 1:24,000.
Publisher
Arizona Geological Survey (Tucson, AZ)
Description
The McGrew Springs 7.5' Quadrangle is located in northwestern Cochise County about 45 miles southeast of Tucson, Arizona and lies south of the town of Benson. The western portion of the map encompasses a portion of the eastern flank of the Whetstone Mountains which is part of the Coronado National Forest. Kartchner Caverns State Park is located in the northwest corner of the map. The majority of the map area is covered by Quaternary fan and Tertiary basin fill deposits. Bedrock and surficial geology in the study area were mapped between October, 2002 and June, 2003 as part of a multiyear mapping program directed at producing geologic map coverage for the Karchner Caverns State Park and surrounding areas. Quaternary and late Tertiary deposits in the McGrew Springs 7.5' Quadrangle were partially mapped by Gray (1965) however this map does not separate the quaternary deposits from each other. Multiple phases of Quaternary alluvial fans top late Tertiary valley fill. Large outcrops of valley fill are exposed in the southeastern portion of the map which could be related to structure, however, there was no direct evidence for this structure in the mapped deposits.
URI
http://hdl.handle.net/10150/630936
Additional Links
https://library.azgs.arizona.edu/item/ADGM-1599606435833-581
Language
en
Series/Report no.
DGM-35
Rights
Arizona Geological Survey. All rights reserved.
Collection Information
Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.
North Bounding Coordinate
31.875
South Bounding Coordinate
31.75
West Bounding Coordinate
-110.375
East Bounding Coordinate
-110.25
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