(2019) Fieldtrip booklet for GSA Grand Canyon Thompson Field Forum I, \"Age and Carving of Grand Canyon: Towards a resolution of 150 years of debate\" (September 14-21, 2019)
Karl Karlstrom
Booklet containing USGS Grand Canyon Geologic River Maps. The Conveners for the 2019 GSA Thompson Field Forum were Karl Karlstrom and Laura Crossey, University of New Mexico, Eugene Humphreys, University of Oregon, David Shuster, University of California Berkeley, and Kelin Whipple, Arizona State University. The age and evolution of the 1.6-km-deep, 270-mile-long Grand Canyon have been debated since J.W. Powell’s exploration of the Colorado River in 1869. This GSA Thompson Field Forum honored the 150th...
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