Jacobs Chapel shale named. Unit is composed of 9 in. of soft, greenish to dark-green, glauconitic, sparsely fossiliferous shale and lies between the top of the New Albany [shale] and the Rockford limestone. The Jacobs Chapel may be seen at most localities in Floyd and Clark Co., IN, where the Rockford in exposed.

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

Jacobs Chapel shale of Campbell (1946) reduced in rank and assigned as the Jacobs Chapel Bed of Clegg Creek Member of New Albany Shale. Forms top bed of New Albany. Underlain by Henryville Bed of the Clegg Creek; overlain by Rockford Limestone.

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

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. 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. Jacobs Chapel ranges from 0.2 to 0.6 ft thick in the outcrop area of Scott, Clark, and Floyd Cos., IN. Correlates with the middle and upper parts of the Hannibal Shale of the Mississippi Valley area, based on conodonts.

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