Usage:
Aura Formation (NV)
Geologic age:
Ordovician
Type section, locality, area and/or origin of name:
Named from Aura (Columbia) mining district on east slope Bull Run Mountains, Bull Run 15-min quadrangle, Elko Co., northeastern NV. Formation exposed in undulating band trending east-west across Bull Run Mountains south of Blue Jacket Peak; continuity disrupted by intrusion of White Rock stock and by faulting which offsets part of formation (Decker, 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 ([ ]).