Geodynamic investigation of a Cretaceous superplume in the Pacific ocean

doi:10.1016/j.pepi.2016.05.018

CORC > 北京大学 > 地球与空间科学学院

	Geodynamic investigation of a Cretaceous superplume in the Pacific ocean
	Xue, Jing ; King, Scott D.
刊名	PHYSICS OF THE EARTH AND PLANETARY INTERIORS
	2016
关键词	Ontong-Java plateau Hikurangi plateau Manihiki plateau Plate reconstructions Mantle convection Plumes LARGE IGNEOUS PROVINCES ONTONG JAVA PLATEAU CORE-MANTLE BOUNDARY TRUE POLAR WANDER EDGE-DRIVEN CONVECTION FLOOD BASALTS DEEP-MANTLE THERMAL HETEROGENEITY DEPENDENT VISCOSITY TOMOGRAPHY REVEALS
DOI	10.1016/j.pepi.2016.05.018
英文摘要	The similarity in both age and geochemistry of the Ontong-Java, Hikurangi, and Manihiki plateaus suggests that they formed as a single superplateau from a unique mantle source. We investigate the necessity of a thermal superplume to form the Great Ontong-Java plateau at about 120 Ma using 3D spherical models of convection with imposed plate reconstruction models. The numerical simulations show that the giant plateau which formed as a result of melting due to the interaction of a plume head and the lithosphere would have been divided into smaller plateaus by spreading ridges, and end up at the present locations of Ontong-Java, Manihiki, and Hikurangi plateaus as well as a fragment in the western Caribbean. By comparing temperature and melt fraction between models with and without an initial thermal superplume, we propose that a Cretaceous superplume in Pacific at 120 Ma is required to form large igneous plateaus. (C) 2016 Elsevier B.V. All rights reserved.; NSF [EAR-0968965]; SCI(E); EI; ARTICLE; jingx87@vt.edu; sking07@vt.edu; 137-148; 257
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437065]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Xue, Jing,King, Scott D.. Geodynamic investigation of a Cretaceous superplume in the Pacific ocean[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2016.
APA	Xue, Jing,&King, Scott D..(2016).Geodynamic investigation of a Cretaceous superplume in the Pacific ocean.PHYSICS OF THE EARTH AND PLANETARY INTERIORS.
MLA	Xue, Jing,et al."Geodynamic investigation of a Cretaceous superplume in the Pacific ocean".PHYSICS OF THE EARTH AND PLANETARY INTERIORS (2016).