Castile evaporite in the Permian Basin. Light-dark layers interp to be summer-winter varves. Photo is ~ 10 cm tall, laminae ~ 5 mm thick. http://pic.twitter.com/x4zS01T5DB
— off the shelf edge (@ZaneJobe) March 19, 2017
via Twitter https://twitter.com/ZaneJobe
March 19, 2017 at 09:22PM
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