In most of IN and west-central KY, the Falling Run, Henryville, and Jacobs Chapel Beds are assigned to the Clegg Creek Member of the New Albany Shale. In areas of southwestern IN, the three beds become part of the Ellsworth Member of the New Albany. In one small area the Falling Run underlies the Underwood, a unit of limited extent. Falling Run has been traced from Floyd Co. north to Jackson Co. All three beds have been recognized in southeastern IL near the top of the Grassy Creek Shale of the New Albany Shale Group by Cluff and others (1981). In some other areas of IL, the beds overlie greenish-gray shale and are assigned to the undifferentiated Saverton and Hannibal Shales. The Falling Run is 0.2 ft thick and consists of sparsely fossiliferous, phosphatic nodules and phosphatic debris.

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