Journal
SCIENCE
Volume 315, Issue 5808, Pages 87-91Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1134207
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The late Paleozoic deglaciation is the vegetated Earth's only recorded icehouse-to-greenhouse transition, yet the climate dynamics remain enigmatic. By using the stable isotopic compositions of soil-formed minerals, fossil-plant matter, and shallow-water brachiopods, we estimated atmospheric partial pressure of carbon dioxide (pCO(2)) and tropical marine surface temperatures during this climate transition. Comparison to southern Gondwanan glacial records documents covariance between inferred shifts in pCO(2), temperature, and ice volume consistent with greenhouse gas forcing of climate. Major restructuring of paleotropical flora in western Euramerica occurred in step with climate and pCO(2) shifts, illustrating the biotic impact associated with past CO2-forced turnover to a permanent ice-free world.
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