O'Fallon Dome (Discarded)

Location

T2N, R7 and 8W, St. Clair County

References

Kay 1915, Bell 1941

Description

The name O'Fallon Dome was applied to a structural high on the Herrin Coal Member (Pennsylvanian). Only one well lies within the area mapped as having closure. Bell's (1941) map differs considerably from Kay's (1915). No new data have been published confirming the existence of a dome; therefore, use of the name should be discontinued.