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National Geologic Map Database

Geologic Unit: Jewel

Usage:

Jewel Quartzite of North Snowy Group (MT)


Geologic age:

Archean, Late


Type section, locality, area and/or origin of name:

Type section: Jewel Lake, 50 m downstream from Pine Creek Lake (Reid and others, 1975).
Principal reference section: ridge crest 360 m northeast of Pine Creek Lake, Beartooth Mountains, Park Co., MT (Reid and others, 1975).


AAPG geologic province:

Montana folded belt


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 ([ ]).