This “ridge” is raised ground about 100-200 feet high. About 1/4 of a mile across. Some kind of glacier did it iirc
Tangentially. it's glacial loess, which is finely ground material created by glaciers scraping bedrock. that loess washed down from places up north like [uck fay]ing Indiana, with the ridge being formed by two separate river channels moving past it, as well as perhaps faulting related to the New Madrid fault. glaciers did not extend that far south in the pleistocene.
I lived in a neighborhood literally against Crowleys Ridge. My only concussion was an out of control bike crash down the west side...in a he ‘70’s. Blame me on that incident...and an intense hatred of anything named ‘The Woodlands’
Let us not forget the New Madrid earthquakes of 1811-12 that caused Reelfoot Lake to form. Guessing it had some other affects around there too.
When I was in Jonesboro we had to decide whether we were going to buy very expensive earthquake insurance. Almost no one had it because of the price. They all swore it was unnecessary since it hadn’t happened in 200 years. The price of it was eye opening as to the likelihood that the insurance companies put on another big one. There will almost certainly be one there in the next 50 years according to the experts. Liquefaction.
All I know is the thing better sink Mud Island because that's what I've been told will happen when the next big one hits over and over and over and over.