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Summary of Tertiary Stratigraphic and Structural Relationships, Camp Grant Wash-Antelope Peak Area, Pinal County, Arizona

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Author
Dickinson, William R.
Issue Date
2000-06-01
Keywords
Arizona Geological Survey Contributed Maps
Tertiary
Antelope Peak
Pinal County
Arizona
Star Flat detachment
Cloudburst detachment
map
Geology
San Manuel Formation

Metadata
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Citation
Dickinson, William R., 2000, Summary of Tertiary Stratigraphic and Structural Relationships, Camp Grant Wash-Antelope Peak Area, Pinal County, Arizona: Arizona Geological Survey Contributed Map CM-00-B, map scale 1:24,000, 12 p. and 1 map sheet.
Description
The accompanying geologic map (scale 1 :24,000) displays the structural and stratigraphic relationships of faulted homoclines of largely undated mid-Tertiary strata exposed over an area of ~250 km2 in the drainages of Camp Grant, Putnam, Dodson, and James Washes in uplands between the Santa Catalina and Tortilla Mountains west of the San Pedro trough. The dominantly homoclinal mid-Tertiary strata dip generally east-northeast, and are cut by normal faults dipping generally west-southwest. Previous maps of various parts of the study area at comparable scale (Krieger, 1968, 1974a, 1974b, 1974c; Hansen, 1983) were prepared without information now available about regional stratigraphic relationships (Dickinson, 1991). Most key geologic features were plotted correctly during previous mapping at smaller scale (Dickinson, 1987, sheets 3, 4, 6; 1988; 1991, figs. 1, 46; 1992), but the detailed placement of contacts and structures on the accompanying geologic map supersedes past mapping. In particular, an exposure of the Cloudburst Formation is delineated between James and Polecat Washes near the northern end of the map area, the position of the base of the Quiburis Formation along the western flank of the San Pedro trough is revised (from Dickinson, 1998, sheet 2) in the vicinity of Dodson and James Washes to the north of Elgin Wash, and transverse east-west faults (Cactus Hill and Putnam Wash faults) are mapped more completely and accurately than before.
URI
http://hdl.handle.net/10150/629178
Additional Links
https://library.azgs.arizona.edu/
Language
en
Series/Report no.
CM-00-B
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
33
South Bounding Coordinate
32.5
West Bounding Coordinate
-111
East Bounding Coordinate
-110.5
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