Title: The Betsie Shale Member
Description: The Betsie Shale Member (Breathitt Formation, Middle Pennsylvanian) is correlated in the Central Appalachian basin by means of gamma-ray logs of oil and gas wells.
Subjects: Shale, Stratigraphic Geology
Places: Appalachian Region, Breathitt Formation (Ky. and Tenn.)
Time periods: Pennsylvanian