News From the Field
Scientists Cast Doubt on Theory of What Triggered Antarctic Glaciation
July 11, 2013
A team of U.S. and UK scientists has found geologic evidence that casts doubt on one of the conventional explanations for how Antarctica's ice sheet began forming. Ian Dalziel of the University of Texas at Austin and colleagues report finding an ancient volcanic arc in the Scotia Sea that might have prevented the Antarctic Circumpolar Current from forming until millions of years after Antarctic glaciation began.
University of Texas at Austin
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