No current usage.
(Rocks of †Heller Tuff or †Heller Dacite (NV) reallocated to part of Fraction Tuff. See Fraction.)
Tertiary
Miocene
Heller Butte, NE/4 sec.2, T. 2 N., R. 42 E., Nye Co., NV (Bonham and Garside, 1979).
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 ([ ]).