Loading ...
Sorry, an error occurred while loading the content.

Ancient undersea volcanoes off Antarctica hold climate secret.

Expand Messages
  • Teresa Binstock
    Ancient undersea volcanoes off Antarctica hold climate secret. Ancient volcanoes discovered deep in the ocean off Antarctica may
    Message 1 of 1 , Jul 14 7:12 AM
    • 0 Attachment
      Ancient undersea volcanoes off Antarctica hold climate secret.
      <http://lat.ms/12Ns8p4>

      Ancient volcanoes discovered deep in the ocean off Antarctica may
      explain a climate mystery critical to predicting Earth's fate as humans
      pump more carbon dioxide into the atmosphere.

      University of Texas geologists dredging thousands of feet below the
      surface of the central Scotia Sea off the southeastern tip of South
      America hauled up volcanic rock after their sonar mapping showed
      formations that looked uncannily like a sunken island chain.

      "It just didn't look like real ocean floor," said geologist Ian W.
      Dalziel, of the University of Texas, Austin, lead author of the paper
      published Thursday in the journal Geology. "We were seeing features that
      looked like they were sunken volcanoes, sitting on top of the old ocean
      floor."

      Their analysis of the rock and sonar data suggests that volcanoes
      erupting from the ancient sea floor formed an island arc that blocked
      the formation of the Antarctic circumpolar current, a critical mixer of
      ocean waters that created a thermal barrier locking Antarctica, and a
      good deal of Earth's water, in its current deep freeze....


      Los Angeles Times. 14 July 2013. [Registration Required]







      [Non-text portions of this message have been removed]
    Your message has been successfully submitted and would be delivered to recipients shortly.