Geologic Map of Petrified Forest National Park, Arizona

Martz, J.W.; Parker, W.G.; Skinner, L.; Raucci, J.J.; Umhoefer, P.; Blakey, R.C.

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cm-12-a_petrified_forest_report.pdf

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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 The map is based on unpublished mapping by Billingsley (1985b), Johns (1988), Woody (2003), published mapping by Martz and Parker (2010), and new mapping.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

Series/Report no.

CM-12-A

Rights

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

Collections

AZGS Document Repository