- Usage in publication:
-
- Scottsburg Member
- Modifications:
-
- First used
- Dominant lithology:
-
- Limestone
- Shale
- AAPG geologic province:
-
- Illinois basin
Summary:
Scottsburg Member of Menard Limestone described in southeastern IL as massive dark-grayish-brown sublithographic fossiliferous limestone with minor shale partings. 30 to 40 ft thick. Separated from overlying Allard Member by 10 to 20 ft of gray shale. Name credited to Swann (in prep).
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Scottsburg Limestone Member
- Modifications:
-
- Named
- Dominant lithology:
-
- Limestone
- AAPG geologic province:
-
- Illinois basin
Summary:
Name Scottsburg Limestone Member of Menard Formation proposed in this report for the middle "massive Menard" of the three major limestone members. Separated from upper or Allard Limestone Member by 15 to 30 ft of shale, and from lower or Walche Limestone Member by 3 to 30 ft of shale. North of limits of Walche Member this shale is included in Waltersburg Formation and Scottsburg becomes lowest unit of Menard. Thickness about 32 ft at type section in Princeton East quad., but upper part obscured by both slumping and faulting and only lower 16 ft well exposed. Age is Late Mississippian (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 ([ ]).