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Contact: Skip Derra
skip.derra@asu.edu
480-965-4823
Arizona State University

Bech Spring Dolomite

Caption: This is a late Precambrian carbonate outcropping at south end of Death Valley, California. Carbon isotopes in these layers bear evidence of the first extensive greening of the Earth.

Credit: L.P. Knauth, Arizona State University

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Related news release: Explosive growth of life on Earth fueled by early greening of planet


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