- Usage in publication:
-
- Owens Creek Member
- Modifications:
-
- Named
- Dominant lithology:
-
- Metagraywacke
- Conglomerate
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Named the Owens Creek Member of the Weverton Formation for Owens Creek, near Thurmont, Frederick Co., MD. Consists of medium- to dark-gray, medium-bedded, coarse-grained to conglomeratic metagraywacke. Thickness is 100 to 150 feet. Overlies the Maryland Heights Member of the Weverton Formation and underlies the Harpers Formation. Lower contact placed at top of thin-bedded siltstones of the Maryland Heights, and upper contact placed within a gradational change between quartzite of the Owens Creek Member and phyllite of the overlying Harpers.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Owens Creek Member*
- Modifications:
-
- Areal extent
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Geographically extended the Owens Creek Member of the Weverton Formation into eastern most WV and northern VA. In MD, VA, and WV, the Owens Creek consists of dusky-blue to dark-gray quartz-pebble conglomerate and greenish-gray quartz-pebble conglomeratic quartzite, metasiltstone, and interbedded quartzite. Unit is poorly sorted, medium- to thick-bedded, graded and cross-bedded. Contains local accumulations of magnetite, heavy minerals, red jasper, red quartz, and phyllite clasts. Top of unit is sharp occurring at top of quartz-pebble conglomeratic quartzite and bottom of unit is gradational with metasiltstone. Thickness is 30 to 50 meters. Overlies the Maryland Heights Member of the Weverton Formation and underlies the Harpers Formation.
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 ([ ]).