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Collecting a piston core on an island in Florida Bay

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Christopher Bernhardt, James Murray, Bethany Stackhouse and Terry McCloskey, USGS, collecting a piston core on Bob Allen Key in Florida Bay, Everglades National Park, April 14, 2014.  Piston cores can be labor intensive, and capture about 1.5 meters of the island’s carbonate mud, or about 3500 years of the sediment record.  Photo: Lynn Wingard, USGS


Public Domain.