Shumway Limestone Member

From ILSTRAT
Revision as of 17:32, 20 January 2017 by IlLex (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Lithostratigraphy: McLeansboro Group >>Mattoon Formation >>Shumway 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

Name

Original description

The Shumway Limestone Member of the Mattoon Formation (Weller, in Dunbar and Henbest, 1942, p. 28; Wanless, 1956, p. 12).

Derivation

Named for Shumway, Effingham County.

Other names

History/background

Type section

Type location

The type locality consists of exposures along Shoal Creek about 2 miles east of Shumway (SE SE SW 26, 9N-5E) (Kosanke et al., 1960, p. 81).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

Extent and thickness

At the type locality it is 2 feet thick.

Lithology

The Shumway is the upper, most persistent of two marine limestones. The Shumway and the thin coal a few feet under it are exposed in Effingham County. It is directly underlain by a black fissile shale and overlain by gray shale.

Core(s)

Photograph(s)

Contacts

Well log characteristics

Fossils

At the type locality it contains an abundant open-marine fauna dominated by brachiopods and containing a few solitary corals.

Age and correlation

Environments of deposition

Economic importance

Remarks

References

DUNBAR, C. O., and L. G. HENBEST, 1942, Pennsylvanian Fusulinidae of Illinois: Illinois State Geological Survey Bulletin 67, 218 p.
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.
WANLESS, H. R., 1956, Classification of the Pennsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation
1700
--