USGS Visual Identifier
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Geologic Unit: Auld Lang Syne

Auld Lang Syne Group (NV*)

Triassic, Late*
Jurassic, Early*
Geologic Province:
Great Basin province*

Areal Extent:

Type Locality:
Type section: SW/4 sec. 32, T. 34 N., R. 37 E., to sec. 24 and 23, T. 34 N., R. 36 E., Rose Creek 7.5-min quadrangle, Pershing Co., NV (Burke and Silberling, 1973).

(alphabetical): Andorno Formation (NV*), Dun Glen Formation (NV*), Grass Valley Formation (NV*), Mullinix Formation (NV*), O'Neill Formation (NV*), Osobb Formation (NV*), Rasberry Formation (NV*), Singas Formation (NV*), Winnemucca Formation (NV*).

Unit Name History:
Named, divided into (ascending) Grass Valley, Osobb, Dun Glen, Winnemucca, Raspberry, O'Neill, Singas, Andorno, and Mullinix formations (Burke and Silberling, 1973).
Age modified; Areal limits (Johnson, 1977).
Overview (Lupe and Silberling, in press).

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