18 April 2014

Friday fold: Sideling Hill

Posted by Callan Bentley

Here’s what the Sideling Hill road cut looked like last month:


It’s a terrific example of a syncline. Usually I show folds in profile view, but here, the view is essentially perpendicular (not parallel) to the axis of the fold:


Sideling Hill’s rocks are early Mississippian in age, made of debris shed off the late Devonian Acadian Orogeny, and they were folded during Alleghanian deformation in the Pennsylvanian-Permian.