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National Geologic Map Database

Geologic Unit: Nine Hill

Usage:

Nine Hill Tuff (NV*)


Geologic age:

early Tertiary (late Oligocene)*


Type section, locality, area and/or origin of name:

Type section: near Nine Hill, in NE/4 sec. 29, T. 16 N., R. 20 E., Carson City 7.5-min quadrangle, Washoe Co., NV (Bingler, 1978).


AAPG geologic province:

Great Basin province*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

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

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).