气候变化领域集成服务门户(CCPortal): On the deep-mantle origin of the Deccan Traps

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DOI	10.1126/science.aah4390
	On the deep-mantle origin of the Deccan Traps
	Glišović P.; Forte A.M.
发表日期	2017
ISSN	0036-8075
起始页码	613
结束页码	616
卷号	355 期号:6325
英文摘要	The Deccan Traps in west-central India constitute one of Earth's largest continental flood basalt provinces, whose eruption played a role in the Cretaceous-Paleogene extinction event. The unknown mantle structure under the Indian Ocean at the start of the Cenozoic presents a challenge for connecting the event to a deep mantle origin. We used a back-and-forth iterative method for time-reversed convection modeling, which incorporates tomography-based, present-day mantle heterogeneity to reconstruct mantle structure at the start of the Cenozoic. We show a very low-density, deep-seated upwelling that ascends beneath the Réunion hot spot at the time of the Deccan eruptions. We found a second active upwelling below the Comores hot spot that likely contributed to the region of partial melt feeding the massive eruption. © 2017, American Association for the Advancement of Science. All rights reserved.
英文关键词	Cenozoic; Deccan Traps; flood basalt; heterogeneity; hot spot; mantle convection; mantle structure; partial melting; volcanic eruption; Article; astronomy; basalt; Cenozoic; end Cretaceous mass extinction; India; mantle; priority journal; thermodynamics; volcano; India; Indian Ocean
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/243818
作者单位	GEOTOP, Université du Québec à Montréal, Montréal, QC H3C 3P8, Canada; Department of Geological Sciences, University of Florida, Gainesville, FL 32603, United States
推荐引用方式 GB/T 7714	Glišović P.,Forte A.M.. On the deep-mantle origin of the Deccan Traps[J],2017,355(6325).
APA	Glišović P.,&Forte A.M..(2017).On the deep-mantle origin of the Deccan Traps.Science,355(6325).
MLA	Glišović P.,et al."On the deep-mantle origin of the Deccan Traps".Science 355.6325(2017).