Natchez Pass Formation of Star Peak Group (NV*)
Triassic, Late*
Triassic, Middle*
Natchez Pass, East Range, Winnemucca quadrangle, north-central NV (Muller and others, 1951).
Great Basin province*
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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 ([ ]).