Ottawa Anticline (Discarded)

Location

Central La Salle County

References

Willman and Payne 1942

Description

An anticlinal nose with a curving southeastward trend was mapped from well data of the Galesville (Cambrian) and New Richmond (Ordovician) Sandstones. The structure is barely perceptible on the St. Peter Sandstone (Willman and Payne 1942). The Ottawa Anticline was interpreted as being largely of pre-St. Peter age. Using many additional control points, Kolata et al. (1983) mapped a homoclinal southerly dip on the top of the Cambrian Franconia Formation in this area. The anticline apparently does not exist and the name should not be used.