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Stop 2-4

Navajo Sandstone Soft Sediment Deformation

 

GPS Location:

38o 17.059' N

111o 09.854' W

 

Ages:

Early Jurassic

 

Rock Units:

Navajo Sandstone

 

Features Present:

This is another example of soft sediment deformation in the Navajo sandstone called a pop up/flower structure (Morris et al. 2003).  This structure may have been caused by overpressurized pore pressures and strong ground motion (e.g., possible Jurassic seismic activity).

 

Depositional Environment:

Eolian

 

 

Figure 1: Large Navajo Sandstone soft sediment deformation feature (“pop up/flower structure”).

Figure 2: A closer view of the “pop-up/flower structure “ shows the deformation of the cross stratification this is continuous across the top of the fold.

 

 

 

For a complete list of references please go to the References page.

 


 

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Disclaimer: The information is property of the University of Utah. Unless cited, images and files found on this site have been taken or created by the Geology and Geophysics Department at the University of Utah. Any use of these images should be cited appropriately. The stratigraphic column is from: Mathis, A. C. 2000. Capitol Reef National Park and Vicinity Geologic Road Logs, Utah, in: P.B. Anderson and D.A. Sprinkel (eds.) Geologic Road, Trail, and Lake Guides to Utah’s Parks and Monuments Utah Geological Association Publication 29. http://www.utahgeology.org/uga29Titles.htm

Copyright (c) 2010, Geology and Geophysics Department, The University of Utah

 

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