Dix Limestone Member
Lithostratigraphy: McLeansboro Group >>Mattoon Formation >>Dix Limestone Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Missourian Series
Allostratigraphy: Absaroka Sequence
Primary source
Willman, H. B., Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, and Jack A. Simon, 1975, Handbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.
Contributing author(s)
M. E. Hopkins and J. A. Simon
Name
Original description
The Dix Limestone Member of the Mattoon Formation (Bradbury, 1965, p. 4).
Derivation
Named for Dix, Jefferson County, where it has been quarried locally.
Other names
History/background
Type section
Type location
The type section consists of exposures on a southwest-flowing tributary to Casey Fork, about 2 miles south of Dix (NW SE NW 25, 1S-2E).
Type author(s)
Type status
Reference section
Reference location
Reference author(s)
Reference status
Stratigraphic relationships
It lies about 50 feet above the position of the Millersville Limestone and 300 feet above the Shoal Creek Limestone.
Extent and thickness
Lithology
In the area of the type section, the Dix is a brownish gray argillaceous limestone as much as 6 feet thick that contains only Spirorbis and numerous ostracodes.
Core(s)
Photograph(s)
Contacts
Well log characteristics
Fossils
Age and correlation
The Dix may correlate with the fresh-water limestone found at the base of the underclay below the Opdyke Coal.
Environments of deposition
Economic importance
Remarks
References
BRADBURY, J. C., 1965, Limestone resources of Jefferson and Marion Counties, Illinois: Illinois State Geological Survey Industrial Minerals Note 23, 15 p.
ISGS Codes
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