NDLI: Calibrating the end-Permian mass extinction.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wang, Wei Jin, Yu-gan Cao, Chang-qun Tang, Yue-gang Erwin, Douglas H. Zhang, Hua Wang, Xiang-dong Li, Wen-zhong Shen, Shu-zhong Liu, Xiao-lei Bowring, Samuel A. Sadler, Peter M. Jiang, Yao-fa Zeng, Yong Wang, Yue Rothman, Daniel H. Ramezani, Jahandar Liu, Lu-jun Mu, Lin Crowley, James L. Henderson, Charles M. Shen, Yanan
Spatial Coverage	China
Description	Author Affiliation: Shen SZ ( State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Nanjing 210008, China. szshen@nigpas.ac.cn)
Abstract	The end-Permian mass extinction was the most severe biodiversity crisis in Earth history. To better constrain the timing, and ultimately the causes of this event, we collected a suite of geochronologic, isotopic, and biostratigraphic data on several well-preserved sedimentary sections in South China. High-precision U-Pb dating reveals that the extinction peak occurred just before 252.28 ± 0.08 million years ago, after a decline of 2 per mil ( ) in Î´(13)C over 90,000 years, and coincided with a Î´(13)C excursion of -5 that is estimated to have lasted ≤20,000 years. The extinction interval was less than 200,000 years and synchronous in marine and terrestrial realms; associated charcoal-rich and soot-bearing layers indicate widespread wildfires on land. A massive release of thermogenic carbon dioxide and/or methane may have caused the catastrophic extinction.
ISSN	00368075
Issue Number	6061
Volume Number	334
e-ISSN	10959203
Journal	Science
Language	English
Publisher	American Association for the Advancement of Science (United States)
Publisher Date	2011-12-09
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biodiversity Ecosystem Extinction, Biological Fossils Animals Carbon Dioxide Carbon Isotopes China Fires Geologic Sediments Invertebrates Classification Isotopes Lead Mass Spectrometry Methane Oceans And Seas Plants Radioisotope Dilution Technique Radiometric Dating Seawater Chemistry Time Uranium Vertebrates Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary
Content Type	Text
Resource Type	Article
Subject	History and Philosophy of Science

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