Scottville Limestone Member

From ILSTRAT
Revision as of 15:48, 24 January 2017 by IlLex (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Lithostratigraphy: McLeansboro Group >>Modesto Formation >>Scottville Limestone Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian 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 Scottville Limestone Member of the Modesto Formation (Payne, 1942, p. 4).

Derivation

Named for Scottville, Macoupin County.

Other names

History/background

Type section

Type location

The type section consists of exposures along Apple Creek near the town (W 1/2 SW 16, 12N-9W) (Wanless, 1956, p. 11).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

Extent and thickness

The Scottville Limestone occurs in southwestern Illinois, where it is as much as 3 feet thick.

Lithology

It is a light gray, fine-grained limestone.

Core(s)

Photograph(s)

Contacts

Well log characteristics

Fossils

The Scottville locally contains abundant Osagia, phylloid algae, and a diverse open-marine fauna.

Age and correlation

It is probably equivalent to part of the West Franklin Limestone of southeastern Illinois.

Environments of deposition

Economic importance

Remarks

References

PAYNE, J. N., 1942, Structure of Herrin (No. 6) coal bed in Macoupin County, eastern Jersey and Greene, southeastern Scott, and southern Morgan and Sangamon Counties: Illinois State Geological Survey Circular 88,46 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
2340
--