- Usage in publication:
-
- Crosby Formation
- Modifications:
-
- Named
- Dominant lithology:
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- Chert
- Shale
- Schist
- Sandstone
- AAPG geologic province:
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- Great Basin province
Summary:
Pg. 12 (table 2). Table 2 credited to E.C. Stephens (1946, unpub. rept.). Crosby Formation is 5,000 to 7,000 feet thick. Consists of bluish-gray well-bedded cherts with varying amounts of shale, schist, and sandstone. Overlies Van Duzer Formation. Underlies Copper Mountain Quartzite. Age is Paleozoic.
["Type area"] is near Rio Tinto Mine, Mountain City quadrangle, Elko Co., northern NV.
Source: US geologic names lexicon (USGS Bull. 1350, p. 185); 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 ([ ]).