Stratigraphic, Sedimentologic and Paleobotanical Investigations of Terrace Gravels, U.S. Army Yuma Proving Grounds

Nations, J.D.; Swift, R.L.; Croxen, F., III; Betts, R.

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Nations, J.D., Swift, R.L., Croxen, F., III, and Betts, R., 2009, Stratigraphic, Sedimentologic and Paleobotanical Investigations of Terrace Gravels, U.S. Army Yuma Proving Grounds: Arizona Geological Survey Contributed Report CR-09-A, 101 p.

Description

This report is the result of an investigation of petrified wood on the U.S. Army Yuma Proving Ground and includes studies of the stratigraphy, sedimentology, and paleobotany of terrace gravels with which it is associated. During late Miocene time (approximately five million years ago) the vicinity of the Yuma Proving Ground became part of the Lower Colorado River extensional trough, a feature that extends as far north as Lake Mead. Sediments expressing a variety of depositional environments were deposited in this trough and now comprise the Cenozoic stratigraphic section for the region. Evidence for the northward incursion of the Gulf is the presence of the Bouse Formation, a fossiliferous package of estuarine and lacustrine sediments.

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http://hdl.handle.net/10150/629245

Additional Links

https://library.azgs.arizona.edu/

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Series/Report no.

CR-09-A

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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

32.0826

West Bounding Coordinate

-114.785

East Bounding Coordinate

-112.5

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AZGS Document Repository