Peters Creek Fault Zone

Part of the Fluorspar Area Fault Complex

Location

Eastern Hardin County (pl. 2)

References

S. Weller et al. 1920, Hubbert 1944, Grogan 1949, J. Weller et al. 1952, Brown et al. 1954, Heyl and Brock 1961, Baxter et al. 1963, Brecke 1964, Baxter and Desborough 1965, Heyl et al. 1965

Description

The Peters Creek Fault is a northeast-trending fracture zone that forms part of the southeast side of the Rock Creek Graben in Illinois. It has been called a fault system but the correct term is a fault zone. To the northeast it apparently is a single fault; southwestward, it divides into numerous subparallel branches. The overall displacement is down to the northwest and approaches 1,000 feet (300 m) in places. Palmer (1976) mapped a possible northeastern extension of the Peters Creek Fault Zone into 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