Red Sandstone

Usage of Geologic Unit Name:
Red Sandstone*

Miocene, late*

Red Sandstone
Red Sandstone outcrops along the North Shore Road (in the foreground) in Lake Mead National Recreation Area.

Geologic Province:
Great Basin province*

Geologic Extent:

Type Locality:
Not designated; named for sedimentary rock exposures in the northern Lake Mead region and west of the Grand Wash Cliffs in basins along the western margin of the Shivwitz Plateau.
Not designated.
Unit Name History:
Red Sandstone of Grand Wash Bay used by Brady and others, 2002. 40Ar/39Ar isotopic dates given of about 11 million years by Harlan and others, 1998.


Brady, Rober J., Fryxell, Joan E., and Wernicke, Brian P., 2002, Preliminary geologic map of the Iceber Canyon Quadrange, Clark County, Nevada and Mohave County, Arizona: Nevada Bureau of Mines and Geology, Open-File Reoport 03-18.

Stephen S. Harlan, Ernest M. Duebendorfer, and Jack E. Deibert, 1998, New 40Ar/39Ar isotopic dates from Miocene volcanic rocks in the Lake Mead area and southern Las Vegas Range, Nevada: Can. J. Earth Sci. Vol. 35, p. 495-503.

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* show accepted USGS usage.