Babylon Sandstone Member

From ILSTRAT
Jump to: navigation, search
Lithostratigraphy: McCormick Group >>Abbott Formation >>Babylon Sandstone Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Atokan 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 Babylon Sandstone Member of the Abbott Formation (Wanless, 1931a, p. 189-190, 192-193).

Derivation

Named for Babylon, Fulton County.

Other names

History/background

Type section

Type location

The type locality is half a mile north of Babylon in the west bank of the Spoon River (NE NE 14, 7N-1E) (Wanless, 1957, p. 65, 205).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

The Babylon Sandstone Member is the lowest named member of the Abbott Formation in western Illinois. In many places it is the lowest unit of the Pennsylvanian System and unconformably overlies Mississippian limestones.

Extent and thickness

The Babylon Sandstone is widely present in western Illinois and at its maximum is about 25 feet thick. The Babylon in western Illinois becomes thinner and sporadic in occurrence to the south.

Lithology

The sandstone is made up of relatively pure, subangular, medium to coarse quartz grains, most of which have been secondarily enlarged by quartz overgrowths that sparkle in sunlight (Wanless, 1957).

Core(s)

Photograph(s)

Contacts

Well log characteristics

Fossils

Age and correlation

The Babylon is correlated with the Grindstaff Sandstone of southern Illinois.

Environments of deposition

Economic importance

Remarks

References

WANLESS, H. R., 1931a, Pennsylvanian cycles in western Illinois: Illinois State Geological Survey Bulletin 60, p.
WANLESS, H. R., 1957, Geology and mineral resources of the Beardstown, Glasford, Havana, and Vermont Quadrangles: Illinois State Geological Survey Bulletin 82, 233 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation
3660
--