- Usage in publication:
-
- Bruce Creek Limestone
- Modifications:
-
- Named
- Dominant lithology:
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- Limestone
- AAPG geologic province:
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- Mid-Gulf Coast basin
- South Georgia sedimentary province
Summary:
Pale bluish-green, white, yellow-gray argillaceous, sandy limestone here named Bruce Creek Limestone. Unit is moderately indurated, granular, fossiliferous, mostly subsurface. 0.6 m thick at type; thickness ranges from <1 to 91 m. Unconformably overlies Chipola Formation; unconformably underlies Intracoastal Formation or Jackson Bluff Formation. Age is middle Miocene.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Bruce Creek Limestone
- Modifications:
-
- Overview
- Areal extent
- AAPG geologic province:
-
- South Georgia sedimentary province
Summary:
Middle Miocene Bruce Creek is a wedge-shaped unit, extending from north-central Okaloosa Co. eastward to western Wakulla Co. In Gulf Co., unit dips generally to the southwest. Thickness exceeds 200 ft in study area. Foraminifera, echinoids, bryozoans, and mollusks predominate. Overlies St. Marks Formation and underlies Intracoastal 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 ([ ]).