- Usage in publication:
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- Swissvale gypsum member
- Modifications:
-
- Original reference
- Dominant lithology:
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- Gypsum
- AAPG geologic province:
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- Denver basin
Summary:
Pg. 821, 833, pl. 1. Swissvale gypsum member of Minturn formation. A bed of white to gray gypsum which lies about 2,000 feet above base of formation in Arkansas River section west of Canyon City. Thickness about 100 feet. Gypsum cannot be traced continuously through the area. It may rise in section toward southeast or may have been injected between different beds in different parts of area. May be same gypsum that occurs in Chubb member of Maroon formation in Salt Creek area, Park County, Colorado. Age is Middle Pennsylvanian (Desmoinesian).
Named from exposures about 0.25 mi northeast of Swissvale switch on the Denver and Rio Grande Western RR, Fremont Co., south-central CO.
Source: US geologic names lexicon (USGS Bull. 1200, p. 3794-3795).
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 ([ ]).