Rocks Under The Northern Ocean Are Found To Resemble Ones Far South
Sunday, May 4, 2008 - 20:14
in Earth & Climate
Scientists probing volcanic rocks from deep under the frozen surface of the Arctic Ocean have discovered a special geochemical signature until now found only in the southern hemisphere. The rocks were dredged from the remote Gakkel Ridge, which lies under 3,000 to 5,000 meters of water; it is Earth's most northerly undersea spreading ridge.