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    Discovery of a large earth fissure in the southern Picacho Basin, Pinal County, Arizona

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    Author
    Cook, J.P.
    Issue Date
    2017-02-13
    Keywords
    Arizona Geological Survey Open File Reports
    Historic
    Pinal County
    West Silver Bell Mountains
    Tator Hills
    subsidence
    groundwater
    geologic hazard
    fissure
    
    Metadata
    Show full item record
    Citation
    Cook, J.P., 2017, Discovery of a large earth fissure in the Southern Picacho Basin, Pinal County, Arizona. Arizona Geological Survey Open-File Report, OFR-17-01, 7 p., 1 appendix.
    Description
    Sometime between Mar. 2014 and Dec. 2014, a mile-long, north-south trending earth fissure opened near the Tator Hills, 13 miles south of Arizona City. The fissure extended an additional ¾ mile to the south sometime after March 2016. The sudden appearance of this deep, jagged fissure in an area of modest but continuous rate of land subsidence (up to 1 inch or 3 cm annually over the past decade), and otherwise without active fissure formation since the early 1990s, was surprising. Arizona Geological Survey (AZGS) geoscientists used this opportunity to couple repeat aerial photography, available via Google Earth, with drone technology to complement sub-meter field mapping in order to better understand the timing and geomorphological expression of the fissuring process.
    URI
    http://hdl.handle.net/10150/629375
    Additional Links
    https://library.azgs.arizona.edu/item/AOFR-1552428429826-634
    Language
    en
    Series/Report no.
    OFR-17-01
    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
    33.8335
    South Bounding Coordinate
    31.4189
    West Bounding Coordinate
    -113.676
    East Bounding Coordinate
    -109.061
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