Hennepin Syncline (Discarded)

Location

Southeastern Bureau County

References

Willman and Payne 1942

Description

This shallow trough was shown as an east-southeast-trending lobe of Willman and Payne's (1842) irregular Granville Basin. It was defined based on subsurface mapping of various Cambrian and Ordovician horizons. Neither the Hennepin Syncline nor the Granville Basin can be recognized on a more recent structure map of the area (Kolata and Graese 1983). The existence of the Hennepin Syncline is doubtful and use of the name should be discontinued.