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2 December 2011
From “Volcanic Versus Anthropogenic Carbon Dioxide” by Terry Gerlach in the June 14, 2011 issue of EOS: Human activities emit ~135 times as much carbon dioxide as the world’s volcanoes? Holy cow.
Today the Friday fold comes with copious bonus structures. It’s the first stop we hit on Day 3 of the pre-GSA Minneapolis field trip to examine the structural geology of the subprovince boundaries within the Superior Craton. This particular site showed granitoid dikes that had been deformed during dextral transpression into a variety of structures depending on their initial orientation, pre-deformation. Those with orientations parallel to the maximum extension direction …