Merom Sandstone Member

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Lithostratigraphy: McLeansboro Group >>Mattoon Formation >>Merom Sandstone 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


Original description

The Merom Sandstone Member of the Mattoon Formation (Collett, 1871, p. 199).


Named for Merom Hill, Sullivan County, Indiana.

Other names


Type section

Type location

The type section is along the Wabash River Bluff near the town of Merom (7, 7N-10W).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

At the type locality the Merom Sandstone occurs directly below glacial drift and has a maximum observed thickness of approximately 55 feet. It lies directly on top of a limestone 2-4 feet thick, which is correlated with the Livingston Limestone of eastern Illinois. The Merom Sandstone is the uppermost named member of the Pennsylvanian System in the Marshall Syncline (fig. 12), where it is approximately 100 feet thick. The stratigraphic position of the Merom Sandstone has not been definitely determined.

Extent and thickness





Well log characteristics


Age and correlation

Environments of deposition

The sandstone is dominantly a fluvial channel deposit, and at its type locality it has eroded the Cohn Coal, which normally lies 20-30 feet above the Livingston Limestone.

Economic importance



COLLETT, JOHN, 1871, Geology of Sullivan County, Indiana: Indiana Geological Survey, 2nd Annual Report, p. 190-240.

ISGS Codes

Stratigraphic Code Geo Unit Designation