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

Uploaded: 14 May 2020
Last Updated: 1 Jun 2020

347 megapixels
27,156 x 12,784 pixels
90.5 in X 42.6 in at 300dpi
27 pixels per inch

These are exposures of Jurassic diabase which can be found on the north side of Conway Robinson State Forest near Gainesville, Va. Conway Robinson is located near the center of the Culpeper Basin, a Mesozoic rift basin related to crustal stretching during the break-up of Pangea. This diabase was the source of the basalt, which flowed on the surface during the break up of Pangea. The outcrops have a very polygonal shape, which is due to series of wide-spaced vertical joints that break the rock into columns. There is also a series of horizontal joints which are more thinly spaced the vertical set. This Image was taken as part of the MAGIC project (Mid Atlantic Geo Imagery Collection).