Coxville Sandstone Member


Linton Formation,

Pennsylvanian System

Type section: The name Coxville Sandstone was first used by Ashley (1899, p. 300-301, 385) in describing a 20-foot (6-m) sandstone exposed on the northeast side of Raccoon Creek in the NE¼ sec. 16 T. 14 N., R 8 W, half a mile east of Coxville, Parke County, Ind. Friedman (1960, p. 23-28) reduced the rank to that of member in the Linton Formation.

Description: The Coxville is typically a fine- to coarse-grained thick-bedded and cross-bedded sandstone, but shale partings a few inches thick are present in some sections. Thickness of the sand varies greatly and is 60 feet (18 m) 1 mile (0.6 km) southeast of the type section. The sand grains are subangular to surrounded and are cemented with clay, iron oxide, or calcium carbonate. The unit lies between the Seelyville Coal and the Colchester Coal Members, although both coals are absent from some places and sandstone is found in their positions. Where the interval between the two coals is composed mostly of shale or shaly sandstone, the Coxville is not recognized. It ranges from 10 to 50 feet (3 to 15 m) in thickness in the subsurface in Sullivan, Pike, Gibson, and Posey Counties.

Correlation: The Coxville Sandstone Member correlates with the Palzo and Isabel Sandstone Members of Illinois.

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