USGS Visual Identifier
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Geologic Unit: Osgood Mountain

Osgood Mountain Quartzite (NV*)

Cambrian, Early*
Geologic Province:
Great Basin province*
Areal Extent:

Type Locality:
Osgood Mountains, in NE/4 T. 36 N., R. 40 E., Golcanda 30- by 60-min quadrangle, Humboldt Co., NV (Ferguson and others, 1951).

Twin Canyon Member (NV*).

Unit Name History:
Named (Ferguson and others, 1951).
Areal limits (Ferguson and others, 1952).
Overview (Silberling and Roberts, 1962).
Areal limits (Hotz and Willden, 1964; Erickson and Marsh, 1971, 1974a, 1974b).
Age modified (Madden-McGuire, 1991).

Note: If you need more information, please contact Nancy Stamm (
Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.

"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().

Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).

U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
Database project personnel
Last modified: 15-Jan-2013