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    oxygen isotope tagged posts

    Geologists determine early Earth was a ‘Water World’ by studying exposed ocean crust

    March 5, 2020, Categories  Astronomy/Space, Environment/Geology

    Benjamin Johnson of Iowa State University woks at an outcrop in remote Western Australia where geologists are studying 3.2-billion-year-old ocean crust. Larger photo. Photo by Jana Meixnerova. Photos provided by Benjamin Johnson.

    The Earth of 3.2 billion years ago was a “water world” of submerged continents, geologists say after analyzing oxygen isotope data from ancient ocean crust that’s now exposed on land in Australia.

    And that could have major implications on the origin of life...

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