Sexton Creek Limestone at base in Kentland area and on cross-section
Dolomite, limestone, and argillaceous dolomite
Skeletal limestone and calcareous shale; dolomitic mudstone (S, Saluda Member) at base
Skeletal limestone and calcareous shale
Limestone and dolomite
Limestone, dolomite, and argillaceous dolomite
Shale and limestone; upper part of Maquoketa Group in deep buried valleys; Maquoketa to upper part of Knox Supergroup in Kentland area