- Usage in publication:
-
- Bremo quartzite
- Modifications:
-
- Named
- Dominant lithology:
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- Quartzite
- AAPG geologic province:
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- Piedmont-Blue Ridge province
Summary:
Quartzite, about 400 ft thick that overlies Arvonia slate, here named Bremo quartzite for occurrence at Bremo Bluff. Consists of three units: upper and lower, each about 150 ft thick, of thin-bedded quartzite and interbedded knotted slate closely folded, and a middle unit of massive quartzite, about 100 ft thick, with a few shale partings. Structure interpreted as isoclinal syncline. Age given as Silurian or younger.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Bremo quartzite
- Modifications:
-
- Overview
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Bremo quartzite treated as an informal unit within the Arvonia Formation, occurring locally within the middle or lower part. Described as light-gray, fine- to medium-grained, thick-bedded and locally cross-bedded quartzite. Includes quartz-muscovite schist, and quartz-pebble conglomerate. Contains crinoid stems and brachiopods. Age is Ordovician.
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 ([ ]).