Bourbon Anticline (Discarded)

Location

T15N, R7E, Douglas County (F-7)

References

Clegg 1959

Description

Clegg (1959) used the name "Bourbon structure" for an anticlinal nose plunging south-southwest off the west flank of the La Salle Anticlinorium. lt is prominent on Clegg's map of the Danville Coal Member (Pennsylvanian), but vague and ill-defined on his map of the older Colchester Coal Member. Clegg noted that the Bourbon structure coincides with part of a large Pennsylvanian paleochannel, now called the Walshville channel, where sandstone replaces the Herrin Coal Member. He suggested that the anticline may reflect differential compaction of the Danville Coal over this immediately subjacent sandstone.

Treworgy (1981) suggested, and I concur, that use of the name Bourbon Anticline should be discontinued because (as Clegg noted) the feature is not a true anticline and probably not of tectonic origin.

References

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