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: