News From the Field
Evidence for a Persistently Iron-rich Ocean Changes Views on Earth's Early History
September 7, 2011
University of California, Riverside, researchers report that the ancient deep ocean was not only devoid of oxygen, but also rich in iron, a key biological nutrient, for nearly a billion years longer than previously thought--right through a key evolutionary interval that culminated in the first rise of animals. "We will need to rethink all of our models for how life-essential nutrients were distributed in the ocean through time and space," the authors say.
University of California, Riverside
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