- Usage in publication:
-
- Gilman quartzite
- Modifications:
-
- Named
- Dominant lithology:
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- Quartzite
- Conglomerate
- AAPG geologic province:
-
- New England province
Summary:
Named the Gilman quartzite in southern Quebec and northwestern VT for Gilman, Quebec, CAN. Consists of light-gray or buff quartzite that weathers to a lighter color. Contains a coarse grit at base and beds of conglomerate near top. Thickness is 3000 feet. Overlies the West Sutton slate and conformably underlies the Dunham dolomite. The Gilman is of Early Cambrian age.
Source: GNU records (USGS DDS-6; Reston 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 ([ ]).