Troy-Brussels Syncline
From ILSTRUC
Part of the Cap Au Grès Faulted Flexure
Location
Southern Jersey and Calhoun Counties, Illinois
(H-2,3); then westward into Missouri
References
Krey 1924, Rubey 1952, Collinson et al. 1954, Collinson 1957, McCracken 1971, Treworgy 1979a
Description
In Illinois, the northern limb of this highly asymmetrical trough is the Cap Au Grès Faulted Flexure, whereas the southern limb is produced by gentle regional northeastward dip of strata off the Ozark Dome. In Missouri, the Troy-Brussels Syncline runs northwest, parallel with the Lincoln Anticline.
