Usage:
Pony Trail Group (NV*)
Subunits:
(alphabetical) --all in NV*: Big Pole Formation, Frenchie Creek Rhyolite, Sod House Tuff.
Geologic age:
Jurassic, Late*
Jurassic, Late(?)*
Type section, locality, area and/or origin of name:
Type section: Pony Trail Canyon, Frenchie Creek and Pine Valley 15-min quadrangles, Eureka Co., NV (Muffler, 1964).
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 ([ ]).