By: magic-gigapans
Image: Callan Bentley, Mid-Atlantic Geo-Image Collection
License: Creative Commons Non Commercial ⧉

Uploaded: 8 May 2020
Last Updated: 19 May 2020

1.24 gigapixels
45,040 x 27,516 pixels
150.1 in X 91.7 in at 300dpi
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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: https://viewer.gigamacro.com/view/T6b6663p2IdorIyt Cleavage and passive folding of the contact resulted from the late Paleozoic Alleghanian Orogeny.