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    Field guide to the overlooks of Fish Creek Canyon, Superstition Mountains, Pinal County, Arizona

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    OFR-05-01_Fish_Canyon.pdf
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    Author
    Ferguson, C.A.
    Issue Date
    2005
    Keywords
    Arizona Geological Survey Open File Reports
    Arizona
    Pinal County
    Superstition Mountians
    Fish Creek Canyon
    igneous rock
    pyroclastic rocks
    silicic volcanic rocks
    overlooks
    field guide
    
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    Show full item record
    Citation
    Ferguson, C.A., 2005, Field guide to the overlooks of Fish Creek Canyon, Superstition Mountains, Pinal County, Arizona. Arizona Geological Survey Open File Report, OFR-05-01, 16 p.
    Description
    This report is intended to be both a teaching and field guide for a spectacularly exposed sequence of silicic volcanic rocks in the northern Superstition Mountains, south-central Arizona. The sequence spans the contact between the Goverment Well and Tule Canyon formations as exposed along Fish Creek Canyon just south of the Salt River. The area of interest has been mapped by graduate students at Arizona State University (Malone, 1972; Suneson, 1976; Isagholian, 1983) and as part ofthe Arizona Geological Survey's 1997 STATEMAP program (Gilbert and Ferguson, 1997). The rocks examined are in the upper part of the 20.5Ma- 18.6Ma Superstition Group (Figure 1) which represents ~650 km3 of intermediate to silicic lavas that were erupted prior to formation of the 350 km2 Superstition caldera. The caldera is the source of the 18.6Ma, ~800 km3 Apache Leap Tuff (Ferguson and Skotnicki, 1996; McIntosh and Ferguson, 1998; Ferguson and Trapp, 2001). The lack of structural complexity, remarkable exposure, general lack of alteration, and ease of access makes this one of the best areas in Arizona for examining silicic lava flows and associated pyroclastic rocks. (16 pages)
    URI
    http://hdl.handle.net/10150/629734
    Additional Links
    https://library.azgs.arizona.edu/item/AOFR-1552429273344-66
    Language
    en
    Series/Report no.
    OFR-05-01
    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
    33.5506
    South Bounding Coordinate
    33.1099
    West Bounding Coordinate
    -111.72
    East Bounding Coordinate
    -111.116
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