Reisner Limestone Member

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Lithostratigraphy: McLeansboro Group >>Mattoon Formation >>Reisner Limestone Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Virgilian 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


Original description

The Reisner Limestone Member of the Mattoon Formation (Kosanke et al., 1960, p. 41, 51).


Named for Reisner School, Jasper County.

Other names

It previously was called Newton Limestone (Newton and Weller, 1937, p. 9, 24-25).


Type section

Type location

The type section consists of exposures along West Crooked Creek, 1.5 miles northeast of the abandoned Reisner School (NE NE 16, 7N-10E).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

The Reisner Limestone lies 60-80 feet above the Bogota Limestone Member and 40-45 feet above an unnamed coal that was mined from a few shallow shafts in the vicinity of Newton and was reported to be approximately 2 feet thick. Kosanke et al. (1960) stratigraphically placed the Reisner Limestone as the youngest named member in the Mattoon Formation. However, recent studies indicate that the Reisner Limestone occurs below the Greenup Limestone, as had been stated by Newton and Weller (1937).

Extent and thickness


Near its type locality the Reisner Limestone is argillaceous and contains fragments of small brachiopods. It is generally less than 1 foot thick, is overlain by 1.5 feet of black fissile shale, and is underlain by claystone containing argillaceous and generally unfossiliferous (with local exceptions of Spirorbis) limestone as much as 3 feet thick in places.




Well log characteristics


Age and correlation

Environments of deposition

Economic importance



KOSANKE, R. M., J. A. SIMON, H. R. WANLESS, and H. B. WILLMAN, 1960, Classification of the Pennsylvanian strata of Illinois: Illinois State Geological Survey Report of Investigations 214, 84 p.
NEWTON, W. A., and J. M. WELLER, 1937, Stratigraphic studies of Pennsylvanian outcrops in part of southeastern Illinois: Illinois State Geological Survey Report of Investigations 45, 31 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation