In 2007, UCSB scientist Dave Valentine (right) and WHOI scientist Chris Reddy investigated the largest mound in the submersible Alvin. Using Alvin's manipulator they brought back a large sample of rock from the undersea dome called Il Duomo.They could heft it easily because it was made of asphalt, the solidified residue of oil. (Molly Redmond, University of California, Santa Barbara)[back]
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