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    Geologic Map of the Trigo Pass 7 ½ ’ Quadrangle, La Paz County, Arizona

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    DGM-136_TrigoPass.pdf
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    DGM-136 Plate(PDF)
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    Author
    Ferguson, Charles A.
    Pearthree, Philip A.
    Affiliation
    Arizona Geological Survey
    Issue Date
    2021-01
    
    Metadata
    Show full item record
    Citation
    Ferguson, C.A., and Pearthree, P.A., 2021, Geologic map of the Trigo Pass 7 1⁄2' Quadrangle, La Paz County, Arizona: Arizona Geological Survey Digital Geologic Map DGM-136, scale 1:24,000.
    Publisher
    Arizona Geological Survey (Tucson, AZ)
    Description
    This map depicts the bedrock and surficial geology of the Trigo Pass 7 ½’ quadrangle in the Trigo and southern Dome Rock Mountains in the lower Colorado River Valley, La Paz County, southwestern Arizona. The entire quadrangle is on the Yuma Proving Ground, administered by the U.S. Army, which granted us access to the area. However, the southeastern part of the quadrangle covers a restricted part of the YPG where escorts are generally required for field mapping. In this part of the quadrangle, surficial deposits were mapped using orthophotography and topography, and were not field-checked. The geologic mapping is part of a multi-year AZGS effort to map the bedrock and basin geology in the lower Colorado River Valley (e.g., Gootee et al., 2016; Johnson et al., 2017; Ferguson et al., 2018). This geologic map complements 7 previous Arizona Geological Survey 7 ½’ quadrangle mapping projects in this general area, and the geologic map of the Cunningham Mountain 7 ½’ quadrangle immediately to the north (Johnson et al., 2021).
    URI
    http://hdl.handle.net/10150/656298
    Additional Links
    https://library.azgs.arizona.edu/item/ADGM-1613165256156-209
    Language
    en
    Series/Report no.
    DGM-136
    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
    33.5
    South Bounding Coordinate
    33.375
    West Bounding Coordinate
    -114.375
    East Bounding Coordinate
    -114.25
    Collections
    AZGS Document Repository

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