Named Three Lick Bed. Assigned to Ohio, Chattanooga, and New Albany Shales in Kentucky, the Ohio Shale in West Virginia, and the Ohio Shale in Ohio where it occurs between the Huron and Cleveland Members. Correlates with the middle unit of the Gassaway Member of the Chattanooga Shale in Tennessee and with the lower part of the Camp Run Member of the New Albany Shale in north-central Kentucky and southern Indiana. Extends eastward in the subsurface into the Chagrin Shale. The Three Lick Bed is "* * * predominantly brownish-black to olive-black carbonaceous shale. Less common, but locally conspicuous, are thin beds of greenish-gray shale, siltstone, and dolomite, and a very small amount of limestone * * *." Conspicuous on gamma-ray logs in the subsurface and on scintillometer profiles on the surface. Forms a conspicuous and useful marker bed. The Three Lick Bed and its equivalents occur in about 28,000 sq mi in the western part of the Appalachian basin and is widespread in the Illinois basin.

Source: GNU records (USGS DDS-6; Reston GNULEX).

According to authors, the Chagrin Shale (and its featheredge, the Three Lick Bed of the Ohio Shale) are the distal parts of a great eastward-thickening wedge of gray marine shale and turbiditic siltstone that lies between the basinal black shales of the gas shale sequence and the near-shore, coarser grained, neritic sandstones of the late Devonian Catskill delta complex. The great wedge extends from central NY southwestward into the Valley and Ridge province of northeastern TN. The Chagrin is typically exposed in northeastern OH, where it is more than 1400 ft thick in Ashtabula Co. In most of its outcrop area, it separates the underlying Huron Member of the Ohio Shale from the overlying Cleveland Member of the Ohio. The Chagrin thins to the southwest and in southern OH and eastern KY becomes the Three Lick Bed. The Three Lick Bed of KY does not correlate with the middle unit of the Gassaway Member in central TN as previously thought. It apparently pinches out just south of the KY-TN State line (see fig. 36).

Source: GNU records (USGS DDS-6; Reston GNULEX).

Cross section between Norton and Asberrys, VA, in the Clinch Mountain outcrop belt shows more detailed divisions of Chattanooga Shale than previously indicated. Base of Chattanooga marked by Belpre Ash. Ascending, members are Rhinestreet Shale, Angola Shale, Java Shale (containing the Center Hill Ash), Dunkirk Shale Tongue of Huron Shale Member and remaining upper part of Huron, Three Lick Bed, Cleveland Shale Member, and Sunbury Shale Member. According to authors, divisions are based on careful outcrop description and outcrop gamma-ray log. Divisions can be traced by borehole gamma-ray logs to their type areas in OH and NY.

Source: GNU records (USGS DDS-6; Reston GNULEX).