By: rkohrs
Image: Callan Bentley ⧉
License: Copyright, All Rights Reserved

Uploaded: 4 Feb 2020
Last Updated: 24 Feb 2020

1.24 gigapixels
45,040 x 27,516 pixels
150.1 in X 91.7 in at 300dpi
250 pixels per inch

A lovely exposure (though rather harshly lit) of the contact between two Cambro-Ordovician limestones in the Shenandoah Valley. Geologic map of the site is here: http://ngmdb.usgs.gov/ngm-bin/pdp/zui_viewer.pl?id=14868 The same contact can be seen in the vicinity of Strasburg, Virginia, here: http://www.gigapan.com/gigapans/78234 Cleavage and passive folding of the contact resulted from the late Paleozoic Alleghanian Orogeny.