- Usage in publication:
-
- Stephensport group
- Modifications:
-
- First used
- Named
- Dominant lithology:
-
- Limestone
- Sandstone
- AAPG geologic province:
-
- Cincinnati arch
Summary:
Author suggested to Professor Weller in 1920 that name Stephensport be used for the middle Chester, including all rocks between the top of Glen Dean limestone and the base of the Cypress sandstone, but Weller preferred to use middle Chester at that time.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Stephensport group
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Cincinnati arch
Summary:
Cumings (1922) suggested name Stephensport as a group to include formations now known as Glen Dean, Hardinsburg, Golconda, and Big Clifty. Term was little used. It is proposed here to revive the group name. As redefined the Stephensport consists of Beech Creek limestone, Big Clifty formation, Golconda limestone (restricted), Hardinsburg formation, and Glen Dean limestone (restricted). Thickness 128 to 158 ft. Overlies West Baden group (redefined); unconformably underlies Mansfield formation. Age is Mississippian
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Stephensport Group
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Cincinnati arch
Summary:
Stephensport Group revised in Indiana. Haney Limestone replaces Golconda Limestone. Age is Chesterian.
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 ([ ]).