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Wednesday, 30 June 2010

Even the geomorphology is bigger (faster) in Texas!

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This week in Nature Geoscience, Michael Lamb and Mark Fonstad report the incision of Canyon Lake Gorge, Texas, during a single dam-release flood event in 2002. This well-constrained flood event moved metre-sized boulders, excavated ~7m of limestone and transformed a soil-mantled valley into a bedrock canyon in only ~3days! Not quite a natural flood event, but quite spectacular and informative all the same. View Canyon Lake in Google Earth here.