Usage:
Piapi Canyon Formation (NV*)
[†?] Piapi Canyon Group (NV*)
Subunits:
FORMATION STATUS (alphabetical) --all in NV: Tiva Canyon Member, Topopah Spring Member, Yucca Mountain Member.
Geologic age:
Tertiary*
Miocene*
Type section, locality, area and/or origin of name:
In vicinity of Piapi Canyon, about 2 mi northwest of [Shoshone Peak, Lat. 36 deg. 56 min. 37 sec. N., Long. 116 deg. 15 min. 39 sec. W., Topopah Spring 7.5-min quadrangle], Nevada Test Site, Nye Co., NV. Named from Piapi Canyon (Poole and McKeown, 1962).
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 ([ ]).