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Comparative Earth history and Late Permian mass extinctionThe repeated association during the late Neoproterozoic Era of large carbon-isotopic excursions, continental glaciation, and stratigraphically anomalous carbonate precipitation provides a framework for interpreting the reprise of these conditions on the Late Permian Earth. A paleoceanographic model that was developed to explain these stratigraphically linked phenomena suggests that the overturn of anoxic deep oceans during the Late Permian introduced high concentrations of carbon dioxide into surficial environments. The predicted physiological and climatic consequences for marine and terrestrial organisms are in good accord with the observed timing and selectivity of Late Permian mass extinction.
Document ID
20040089279
Document Type
Reprint (Version printed in journal)
Authors
Knoll, A. H. (Botanical Museum, Harvard University Cambridge, MA 02138, United States)
Bambach, R. K.
Canfield, D. E.
Grotzinger, J. P.
Date Acquired
August 21, 2013
Publication Date
July 26, 1996
Publication Information
Publication: Science
Volume: 273
ISSN: 0036-8075
Subject Category
Exobiology
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Exobiology