- Usage in publication:
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- Melville formation
- Modifications:
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- Original reference
- AAPG geologic province:
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- Central Montana uplift
Summary:
Pg. 15 (table), 25, 55, pl. 1. Melville formation of Fort Union group. Dark, greenish or gray, shales with numerous gray to yellow sandstones. Thickness at least 4,000 feet and possibly as much as 6,000 feet. Uppermost unit of group in Crazy Mountains. Overlies Lebo formation. Age is Paleocene.
Named from town of Melville, Sweetgrass Co., central MT, which is situated on these beds and is surrounded, within a few miles, by excellent and typical exposures of them.
Source: US geologic names lexicon (USGS Bull. 1200, p. 2456).
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 ([ ]).