- Usage in publication:
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- Banner limestone
- Modifications:
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- Named
- Biostratigraphic dating
- Dominant lithology:
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- Conglomerate
- Limestone
- AAPG geologic province:
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- Great Basin province
Summary:
Banner limestone is recognized in the Mountain City district [T. 45 and 46 N., R. 53 E.], Elko County, Nevada, and is credited to Nolan [1932, unpublished work]. Unit is thick-bedded, grayish-blue limestone, altered to silicates in a wide zone adjoining the quartz monzonite unit located within the district. Basal part of unit consists of conglomerate grading into quartzite. Thickness of unit ranges from 500 to 1,100 feet; pinches out to the west. Age is Late Mississippian, on the basis of fossils (brachiopod, corals) identified by G.H. Girty; or age is "probably Pennsylvanian or Permian(?)", based on fossils identified by Helen Duncan. Mapped as Carboniferous.
Source: Modified from GNU records (USGS DDS-6; Menlo GNULEX).
- Usage in publication:
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- Banner Formation*
- Modifications:
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- Age modified
- AAPG geologic province:
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- Great Basin province
Summary:
Includes detailed discussions of areal extent, lithology, correlative units, and age of Banner Formation. Age is Early or Late Mississippian (possibly Osagean or probably Meramecian), on the basis of fossils.
Source: 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 ([ ]).