- Usage in publication:
-
- Chellis Limestone
- Modifications:
-
- Named
- Dominant lithology:
-
- Limestone
- AAPG geologic province:
-
- Great Basin province
Summary:
Pg. 18, 36 (table 1), pI. 1. Chellis Limestone. Blue-gray fine crystalline, laminated to massive limestone with numerous calcite seams and coatings; some argillaceous and dolomitic beds. Thickness about 1,900 feet. Overlies Aura Formation (new); underlies Storff Formation (new); both contacts conformable. Age is Silurian(?), based on regional correlation. [Age is Silurian on map legend.]
Type locality not designated. Named from Chellis mine which is situated near contact of the limestone and underlying Aura Formation on north slope of White Rock Canyon, Bull Run 15-min quadrangle, Elko Co., northeastern NV. Forms sinuous band trending east-west across Bull Run Mountains. Continuity of exposure partially disrupted by faulting, which offsets formation.
Source: US geologic names lexicon (USGS Bull. 1350, p. 144-145); GNU records (USGS DDS-6; Menlo GNULEX).
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 ([ ]).