Star Union Syncline (Discarded)

Location

T33N, R1E, La Salle County

References

Willman and Payne 1942

Description

The Star Union Syncline was named for a brewery in Peru, Illinois. The axis of the syncline was shown by Willman and Payne (1942) but none of their structure contour maps indicate a syncline corresponding to the Star Union Syncline as shown in their figure 102 and described in the text. The area in question is on the steep flank of the Peru Monocline (new); presence of a syncline here is dubious.