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1 Department of Geology, University of North Carolina, Chapel Hill, North Carolina 27599
2 Earth Science Department, University of California, Santa Cruz, California 95064
3 Geosciences Department, Bremen University, D-28334 Bremen, Germany
4 Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island 02882
5 Department of Earth and Environmental Sciences, Wesleyan University, Middletown, Connecticut 06457
Two recently drilled Caribbean sites contain expanded sedimentary records of the late Paleocene thermal maximum, a dramatic global warming event that occurred at ca. 55 Ma. The records document significant environmental changes, including deep-water oxygen deficiency and a mass extinction of deep-sea fauna, intertwined with evidence for a major episode of explosive volcanism. We postulate that this volcanism initiated a reordering of ocean circulation that resulted in rapid global warming and dramatic changes in the Earth's environment.
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