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    Geologic Map of Petrified Forest National Park, Arizona

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    Author
    Martz, J.W.
    Parker, W.G.
    Skinner, L.
    Raucci, J.J.
    Umhoefer, P.
    Blakey, R.C.
    Issue Date
    2012-12-26
    Keywords
    Arizona Geological Survey Contributed Maps
    Tertiary
    Mesozoic
    Triassic
    Miocene
    Quaternary
    Najavo County
    Apache County
    Petrified Forest
    Holbrook
    Newspaper Rock bed
    Sonsela Member
    Petrified Forest Member
    Owl Rock Member
    Chinle Formation
    Bidahochi Formation
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    Citation
    Martz, J.W., Parker, W.G., Skinner, L. and Raucci, J.J., Umhoefer, P., and Blakey, R.C., 2012, Geologic Map of Petrified Forest National Park, Arizona. Arizona Geological Survey Contributed Map CM-12-A, 1 map sheet, map scale 1:50,000,18 p.
    Publisher
    Arizona Geological Survey (Tucson, AZ)
    Description
    This geologic dataset covers the area within the boundaries of Petrified Forest National Park (PEFO), located in northeastern Arizona (Figure 1) as defined prior to the expansion approved in December of 2004 (Figure 2); much of the land in the approved expansion has not yet been acquired by the National Park Service, and is inaccessible to the public. The map is based on unpublished mapping by Billingsley (1985b), Johns (1988), Woody (2003), published mapping by Martz and Parker (2010), and new mapping. The geology of the Little Colorado River Valley in eastern Arizona, including the PEFO area (Figures 1, 2), is characterized by widespread exposures of Triassic and Jurassic terrestrial sedimentary rocks. The Upper Triassic Chinle Formation constitutes the bulk of the non-Quaternary exposures within the Park (Figure 3). The Chinle Formation unconformably overlies the Lower- Middle Triassic Moenkopi Formation. Although this latter unit is not exposed within PEFO, widespread exposures are present to the west and south in the Little Colorado River Valley.
    URI
    http://hdl.handle.net/10150/630688
    Additional Links
    http://repository.azgs.az.gov/uri_gin/azgs/dlio/1487
    Language
    en
    Series/Report no.
    CM-12-A
    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
    35.0601
    South Bounding Coordinate
    34.8665
    West Bounding Coordinate
    -109.946
    East Bounding Coordinate
    -109.797
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