19 January 2018
Friday fold: crumpled quartz vein from VGFC
Posted by Callan Bentley
Remember the Virginia Geological Field Conference from back in October?
Well here’s a folded quartz vein we observed along a small shear zone in the Blue Ridge basement complex. There are two views of it, from approximately perpendicular points of view:
These rocks are Mesoproterozoic, but the vein would obviously be younger than that, and the deformation is likely Alleghanian in age (late Paleozoic).
Annotated copies of the photos: