- Usage in publication:
-
- North Vernon limestone
- Modifications:
-
- Named
- Dominant lithology:
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- Limestone
- AAPG geologic province:
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- Cincinnati arch
Summary:
Named the North Vernon, Jennings Co., southeastern IN. Consists of dark-blue, compact, stratified limestone with an occasional upper ledge of gray limestone. Thickness is 11 ft. Overlies Corniferous limestone and underlies the New Albany shale. Unit is same as Sellersburg limestone.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- North Vernon Limestone*
- Modifications:
-
- Biostratigraphic dating
- AAPG geologic province:
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- Illinois basin
- Cincinnati arch
Summary:
Conodont biostratigraphy indicates that the Beechwood Member of the North Vernon Limestone in IN is of Middle Devonian (Givetian) age. conodonts from the VARCUS, HERMANNI-CRISTATUS, and DISPARILIS Zones were recovered from the Beechwood Member. Unit unconformably underlies the Blocher Member of the New Albany Shale.
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 ([ ]).