- Usage in publication:
-
- Stacy dolomite member*
- Modifications:
-
- Named
- Dominant lithology:
-
- Limestone
- AAPG geologic province:
-
- Appalachian basin
Summary:
Named the Stacy dolomite member of the Gatesburg formation for Stacy Hill near Williamsburg, Blair Co., central PA. Unit is basal member of formation. Consists of coarse, thick-bedded, steely blue limestone without quartzite. Overlies Warrior limestone. Thickness is 500 feet. The Stacy is of Late Cambrian age.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Stacy dolomite member
- Modifications:
-
- Overview
- AAPG geologic province:
-
- Appalachian basin
Summary:
The Stacy dolomite member of the Gatesburg formation in the Everett quad. consists of about 130 feet of alternating dark crystalline massive dolomite and less resistant thin-bedded lighter dolomite. Separated from overlying Ore Hill dolomite member by a 400-foot interval referred to as lower sandy Gatesburg member; separated from underlying Warrior limestone by 50 feet of covered strata.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Stacy Member
- Modifications:
-
- Overview
- AAPG geologic province:
-
- Appalachian basin
Summary:
The Stacy Member of the Gatesburg Formation in central PA consists of thick-bedded crystalline dolomite. Unit is lowest member of formation. Overlies Warrior Formation and underlies "lower sandstone" member.
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 ([ ]).