Transect Trip 22: S-fold breached by thrust fault
Oriskany sandstone, folded into an S-fold, then snapped down the middle!
Oriskany sandstone, folded into an S-fold, then snapped down the middle!
Hoo-hoo! An anticline in the hanging wall of a thrust fault in the Valley & Ridge. This is the redbeds of the latest-Ordovician Juniata Formation. Lynn Fichter for scale.
This is a nice sample of slicks. On the other side, burrows! I like that: a primary structure on one face, a secondary structure on the opposite side.
Looking north along the Germany Valley, which lies in the core of a breached plunging anticline. The topography is defined by the erosion-resistant ridge of Tuscarora Sandstone. This is the Wills Mountain Anticline. The Tuscarora is Silurian; at the bottom of the valley (core of the anticline), you find Ordovician carbonates.
Fault-duplicated double section of the (Silurian aged) erosion-resistant Tuscarora Sandstone:
Sweet hackles on the right; pen for scale.
Radiating out from the greatest sense of scale EVER!
Nice one! … In spite of the highway department graffiti… Swiss Army Knife for scale!
Where are some ripple marks in the Hampshire Formation. Cell phone service is a lot more localized here in West Virginia, so we’ll see how many posts I manage today…
What do you think, folks? Do you like seeing field photos as I take them? Should I continue the Transect Trip instant photoblog series tomorrow as we traverse the Valley & Ridge?