Usage:
Ashdown Tuff (NV*)
Geologic age:
Tertiary (Oligocene to Miocene)*
Type section, locality, area and/or origin of name:
Notable exposures of thickest cooling unit in canyon walls of Cove Creek, in NE/4 sec. 2, T. 42 N., R. 27 E., directly northwest of Cove Meadows, Idaho Canyon quadrangle, Humbolt Co., northwest NV. Named from Ashdown Mine on west side of Pine Forest Range, Denio quadrangle, northwest NV (Noble and others, 1970).
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 ([ ]).