Dykes fill extensional fractures, which are rarely single linear breaks. This one fills offset fracture array at Kildonan, Arran. http://pic.twitter.com/ukOGTMCXvo
— John Faithfull (@FaithfullJohn) August 13, 2017
via Twitter https://twitter.com/FaithfullJohn
August 13, 2017 at 10:54PM
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