Oregon Anticline

Part of the Sandwich Fault Zone

Location

Southern Ogle County (A, B-5)

References

Bevan 1935, 1939, Willman and Templeton 1951, Templeton and Willman 1952, Kolata et al. 1978, Kolata et al. 1983

Description

The Oregon Anticline is a broad, low flexure located on the northeast downthrown side of the Sandwich Fault Zone, near the northwestern end of the fault zone. The anticline trends nearly parallel to the fault zone. Its maximum structural relief is 200 to 300 feet (60-90 m) on the Franconia Formation (Cambrian; Kolata et al.1978, Kolata et al. 1983). The position of the fold relative to the fault zone suggests a genetic relationship.