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Late Paleozoic tropical climate response to Gondwanan deglaciation

Christopher J. Poulsen, David Pollard, Isabel P. Montanez and David Rowley
Late Paleozoic tropical climate response to Gondwanan deglaciation
Geology (Boulder) (September 2007) 35 (9): 771-774


Coupled climate-biome model simulations of the late Paleozoic were developed to determine the response of Pangean tropical climate to Gondwanan deglaciation. The model simulations predict substantial changes over equatorial Pangea including continental drying, a reversal of equatorial winds, warming, heavier delta (super 18) O values of meteoric precipitation, and the expansion of deserts and the contraction of forests. The magnitude of these tropical responses is sensitive to the extent of Gondwana continental ice and the deglacial rise in atmospheric pCO (sub 2) , boundary conditions that are not well known for the late Paleozoic. Nonetheless the model predictions are consistent with climatic and environmental trends determined from terrestrial proxy data, implying that the deglaciation of Gondwana was a transformational climate event in tropical Pangea.

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 35
Serial Issue: 9
Title: Late Paleozoic tropical climate response to Gondwanan deglaciation
Affiliation: University of Michigan, Department of Geological Sciences, Ann Arbor, MI, United States
Pages: 771-774
Published: 200709
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 31
Accession Number: 2007-107338
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch map
Secondary Affiliation: Pennsylvania State University, USA, United StatesUniversity of California, Davis, USA, United StatesUniversity of Chicago, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200745
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