气候变化领域集成服务门户(CCPortal): Zircon U-Pb geochronology links the end-triassic extinction with the central Atlantic magmatic province

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DOI	10.1126/science.1234204
	Zircon U-Pb geochronology links the end-triassic extinction with the central Atlantic magmatic province
	Blackburn T.J.; Olsen P.E.; Bowring S.A.; McLean N.M.; Kent D.V.; Puffer J.; McHone G.; Rasbury E.T.; Et-Touhami M.
发表日期	2013
ISSN	0036-8075
起始页码	941
结束页码	945
卷号	340 期号:6135
英文摘要	The end-Triassic extinction is characterized by major losses in both terrestrial and marine diversity, setting the stage for dinosaurs to dominate Earth for the next 136 million years. Despite the approximate coincidence between this extinction and flood basalt volcanism, existing geochronologic dates have insufficient resolution to confirm eruptive rates required to induce major climate perturbations. Here, we present new zircon uranium-lead (U-Pb) geochronologic constraints on the age and duration of flood basalt volcanism within the Central Atlantic Magmatic Province. This chronology demonstrates synchroneity between the earliest volcanism and extinction, tests and corroborates the existing astrochronologic time scale, and shows that the release of magma and associated atmospheric flux occurred in four pulses over about 600,000 years, indicating expansive volcanism even as the biologic recovery was under way.
英文关键词	lead; uranium; zirconium; chronology; extinction; flood basalt; geochronology; magma; magmatism; volcanism; zircon; Atlantic Ocean; atmosphere; basalt; chronology; end Triassic mass extinction; Lower Jurassic; priority journal; review; Upper Triassic; volcano; Atlantic Ocean; Atlantic Ocean (Central); Dinosauria
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243054
作者单位	Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, United States; Department of Earth and Planetary Sciences, Rutgers University, Piscataway, NJ 08554, United States; Department of Earth and Environmental Sciences, Rutgers University, Newark College of Arts and Sciences, Newark, NJ 07102, United States; not available, 9 Dexters Lane, Grand Manan, NB E5G 1A1, Canada; Department of Geosciences, Stony Brook University, Stony Brook, NY 11794, United States; Département des Sciences de la Terre, Université Mohammed Premier Oujda, 60000 Oujda, Morocco; Department of Terrestrial Magnetism, Carnegie Institution for Science, Washington, DC 20015, United States
推荐引用方式 GB/T 7714	Blackburn T.J.,Olsen P.E.,Bowring S.A.,et al. Zircon U-Pb geochronology links the end-triassic extinction with the central Atlantic magmatic province[J],2013,340(6135).
APA	Blackburn T.J..,Olsen P.E..,Bowring S.A..,McLean N.M..,Kent D.V..,...&Et-Touhami M..(2013).Zircon U-Pb geochronology links the end-triassic extinction with the central Atlantic magmatic province.Science,340(6135).
MLA	Blackburn T.J.,et al."Zircon U-Pb geochronology links the end-triassic extinction with the central Atlantic magmatic province".Science 340.6135(2013).