- Usage in publication:
-
- Bryantsville bed
- Modifications:
-
- Named
- Dominant lithology:
-
- Limestone
- AAPG geologic province:
-
- Illinois basin
Summary:
Named Bryantsville bed of Levias Member of Ste. Genevieve Limestone. Described as brown, rubbly, brecciated, and dense limestone that forms the topmost bed of Levias. Name taken from an unpublished manuscript by C.A. Malott. Marks the Meramec-Chester contact where the Aux Vases Sandstone is absent.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Bryantsville Breccia Bed
- Modifications:
-
- Revised
- Overview
- AAPG geologic province:
-
- Illinois basin
Summary:
Usage of the Ste. Genevieve Limestone in Indiana is here revised. In the subsurface, unit is divided into (ascending) Fredonia, Karnak, and Joppa Members, which are basically equivalent to members of the same name in IL. Levias and Spar Mountain Members of Ste. Genevieve are no longer used in Indiana. In outcrop, Joppa is replaced by rocks typical of upper Karnak. Uppermost rocks of the Ste. Genevieve on the surface and in the very shallow subsurface are assigned to the Bryantsville Breccia Bed of the Karnak Member. (Bryantsville of previous usage marked the top of the Levias Member). Age is Valmeyeran.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Bryantsville Breccia Bed*
- Modifications:
-
- Overview
- AAPG geologic province:
-
- Cincinnati arch
Summary:
Bryantsville Breccia Bed of Ste. Genevieve Limestone adopted for use by the USGS in KY and IN. Occurs at top of Ste. Genevieve, forms marker bed useful for locating top of Ste. Genevieve in a karst terrain with thick residual soil.
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 ([ ]).