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Surficial Geology of the Superstition Mountain Piedmont Area, Northern Pinal and Eastern Maricopa Counties, Arizona: Superstition Mountains SW Quadrangle v. 2.0

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Author
Huckleberry, Gary
Affiliation
Arizona Geological Survey
Issue Date
2024
Keywords
Phoenix Basin
Chandler
Queen Creek
Goldfield
Gilbert
Weavers Needle

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Citation
Huckleberry, G., 2024, Surficial Geology of the Superstition Mountain Piedmont Area, Northern Pinal and Eastern Maricopa Counties, Arizona: Superstition Mountains SW Quadrangle v. 2.0, DGM-271
Publisher
Arizona Geological Survey (Tucson, AZ)
Description
One of the fastest growing areas of Arizona is the eastern part of the Phoenix Basin near the communities of Chandler, Gilbert, Mesa, and Apache Junction. Much of this development has occurred on the piedmont near the base of the mountains where little of the surficial geology has ever been mapped. Because this area of the Phoenix Basin will continue to grow in the future, there is a need to understand the nature and distribution of surficial deposits. Surficial geologic mapping provides a spatial data base for assessing potential geologic hazards (Pearthree, 1991), for defining important groundwater recharge zones, and for analyzing the physical characteristics of surface deposits for excavation purposes. Such mapping is also valuable to earth scientists who are interested in defining the links between landscape evolution and climate change (Bull, 1991). This report presents the results of surficial geologic mapping in the eastern margins of the Phoenix Basin including the Superstition Mountain piedmont and Queen Creek alluvial fan (Figure 1). The region mapped is contained within the Florence Junction, Florence NE, Goldfield, Magma, and Superstition Mountains SW quadrangles (1:24,000), and part of the Weavers Needle quadrangle (1:24,000). This area contains a variety of landscape elements including steep mountain slopes, pediments, and alluvial fans. Included within this report is a discussion of the origins of pediments and an analysis of streamflow processes on the Queen Creek fan. ( 33 pages; 6 map sheets, map scale 1:24,000). This geodatabase is part of a digital republication of a 1993 geologic map originally created by the Arizona Geological Survey with financial support from United States Geological Survey (COGEOMAP). Preparation for republication was conducted by students from the University of Arizona with financial support from the U.S. Geological Survey, National Geological and Geophysical Data Preservation Program (G23AP00215) and included the production of a new GIS geodatabase and a revised map layout. It is based on interpretations that were made from the data available at the time it was created. The AZGS does not guarantee this map or digital data to be free of errors nor assume liability for interpretations made from this map or digital data, or decisions based thereon. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.
URI
http://hdl.handle.net/10150/678577
Additional Links
https://library.azgs.arizona.edu/
Language
en
Series/Report no.
DGM-271
Rights
Arizona Geological Survey. All rights reserved.
Collection Information
Documents in the AZGS Documents 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
33.375
South Bounding Coordinate
33.25
West Bounding Coordinate
-111.5
East Bounding Coordinate
-111.375
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