Reader Eric Fulmer contributed this week’s Friday fold. It’s a beauty!
Eric writes that this outcrop is from “the Belgian Ardennes near Durbuy. There’s a well-exposed anticline along the Ourthe River. The stone is late-Devonian limestone typical of the immediate area that was later deformed regionally due to the Variscan orogeny. The Ardennes are classic fold-and-thrust belt, much like our Valley-and-Ridge province.”
Very cool indeed. Thanks for sharing, Eric!
Some more photos of folds:
Sideling Hill in Pennsylvania: http://static.panoramio.com/photos/large/5988254.jpg
BigFork Chert (Arkansas): http://ualr.edu/earthsciences/uploads/2007/11/PromiselandFoldsBigfork.jpg
A textbook and classical example of folded rocks. Nice!!