Wallace Branch Fault Zone

Part of the Fluorspar Area Fault Complex

Location

Sections 25 and 36, T12S, R7E, Hardin County (pl. 2)

References

S. Weller et al. 1920, Currier and Hubbert 1944, J. Weller et al. 1952, Baxter and Desborough 1965, Baxter et al. 1967

Description

This fault zone forms the west margin of the Rock Creek Graben where the graben changes trend from N55°E to N20°E northwest of Rosiclare. The Wallace Branch Fault Zone is reported to be a high-angle reverse fault with the southeast side downthrown as much as 1,000 feet (300 m) in places. The zone continues south of the Ohio River in Kentucky.

Figure(s)

Figure 34   Structure of top of the Springfield Coal Member in the central part of Eagle Valley Syncline. Contour interval is 5O feet inside coal outcrop and 100 feet elsewhere (Nelson and Lumm 1987). Plate 2   Fluorspar Area Fault Complex and Shawneetown Fault Zone