Danville, KY: Dix River

50 and partly cloudy! Maybe Kentucky missed the memo that it is still February, but Christopher and I took advantage of it for some field work. This past Saturday we took a drive down to Danville, KY to check out my favorite Upper Ordovician deposits, the Lexington Formation with our good friend Kyle of the Dry Dredgers.

At Danville, Boyle County, KY we studied ~60 meters of exposed section. Measuring bed-by-bed we collected data to draft a stratigraphic column and made some quick fossil counts.

One of the more interesting finds was how heavily faulted the entire region was. Resulting in an offset of more than a meter to just a few centimeters.

One of the MANY faults at this exposure. 

Working in heavily faulted areas adds complexity to the otherwise layer cake stratigraphy we are spoiled with in the central Kentucky outcrop belts.


Another unique feature of this particular outcrop belt is the great abundance of preserved bentonites. The literature has noted the presence of as many as 20 bentonites in the Tyrone Formation, the main member of the lower micritic section of the exposure. Including the famed Deicke K-Bentonite.

Sticky yellow clay. K-bentonite?, a sample was collected for further analysis.

Finally we found another good chronostratigraphic tie line with a deformed (ball and pillow structure) zone believed to be the expression of the capitol.

Deformed beds of the "capitol", helpful as a marker horizon when correlating
across faults.