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Field guide to exhumed paleochannels near Green River, Utah: Terrestrial analogs for sinuous ridges on Mars

By
Rebecca M.E. Williams
Rebecca M.E. Williams
1 Planetary Science Institute, 1700 East Fort Lowell Road, Suite 106, Tucson, Arizona 85179, USA
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Rossman P. Irwin, III
Rossman P. Irwin, III
1 Planetary Science Institute, 1700 East Fort Lowell Road, Suite 106, Tucson, Arizona 85179, USA
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James R. Zimbelman
James R. Zimbelman
2 Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Independence Avenue at Sixth Street SW, MRC 315, Washington, DC 20013-7012, USA
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Thomas C. Chidsey, Jr.
Thomas C. Chidsey, Jr.
3 Utah Geological Survey, P.O. Box 146100, Salt Lake City, Utah 84114-6100, USA
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David E. Eby
David E. Eby
4 Eby Petrography and Consulting, 2830 West 9th Avenue, Denver, Colorado 80204, USA
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Published:
December 01, 2011

Multiple cemented channel-fill deposits from the Late Jurassic and Early Cretaceous, once buried beneath 2400 m of sediment, are now exposed at the surface in arid east-central Utah due to erosion of the less resistant surrounding material. This field guide focuses on examples near the town of Green River where there is public access to several different types of exhumed paleochannels within a small geographic region. We describe the geologic setting of these landforms based on previous work, discuss the relevance to analogous sinuous ridges that are interpreted to be inverted paleochannels on Mars, and present a detailed road log with descriptive stops in Emery County, Utah.

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Contents

GSA Special Papers

Analogs for Planetary Exploration

W. Brent Garry
W. Brent Garry
Planetary Science Institute, Tucson, Arizona, USA
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Jacob E. Bleacher
Jacob E. Bleacher
NASA Goddard Space Flight Center, Planetary Geodynamics Lab, Greenbelt, Maryland, USA
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Geological Society of America
Volume
483
ISBN print:
9780813724836
Publication date:
December 01, 2011

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