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Earth may have been a “water world” with submerged continents 3.2 billion years ago

Dr. Ben Johnson, assistant professor in the Department of Geological and Atmospheric Sciences, and coauthor Dr. Boswell Wing, University of Colorado Boulder, studied 3.2-billion-year-old ocean crust exposed in Australia and used that data to build a quantitative, inverse model of ancient seawater. The model indicates the early Earth could have been a “water world” with submerged continents. The findings have just been published online by the journal Nature Geoscience.

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