Richard Norris, University of California - San Diego (IMAGE)

University of California - San Diego

Richard Norris, University of California - San Diego

Caption

Richard Norris in his lab with ancient sediments obtained by the Ocean Drilling Program reveal the mark of "hyperthermals," warming events lasting thousands of years that changed the composition of the sediment and its color. The dark color in the large sediment core sample at left depicts the onset and aftermath of a 55-million-year-old warming event when changes in ocean temperatures altered the composition of marine life

Credit

Scripps Institution of Oceanography, UC San Diego

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