Geochemical constraints on the tectonic environment of the Late   Paleoproterozoic mafic dyke swarms in the North China Craton

doi:10.1016/j.gr.2007.06.005

CORC > 北京大学 > 地球与空间科学学院

	Geochemical constraints on the tectonic environment of the Late Paleoproterozoic mafic dyke swarms in the North China Craton
	Hou, Guiting ; Li, Jianghai ; Yang, Mohan ; Yao, Weihao ; Wang, Chuancheng ; Wang, Yanxin
刊名	gondwana research
	2008
关键词	mafic dyke swarms Late Paleoproterozoic subcontinental lithospheric mantle lower crust Zhongtiao-Yanliao aulacogens rifting environment LARGE IGNEOUS PROVINCE CENTRAL OROGENIC BELT AFRICAN RIFT SYSTEM CENTRAL ZONE MESOPROTEROZOIC SUPERCONTINENT GREENSTONE-BELT INNER-MONGOLIA MANTLE SOURCE EVOLUTION PLUME
DOI	10.1016/j.gr.2007.06.005
英文摘要	Late Paleoproterozoic mafic dyke swarms are widespread in the Shanxi Province in the Western Block and Central Orogenie Zone, and also in the Shandong Province of the Eastern Block of the North China Craton (NCC). Both of the mafic dyke swarms in Shandong and Shanxi plot mainly in the field of continental rift environment. The trace element spidergrams and the rare-earth element (REE) graphs of both mafic dyke swarms show similar geochemical features to data from the lavas (Xiong'er Group) in the Zhongtiao-Yanliao aulacogens. This suggests that the origin of the mafic dyke swarms is related to the aulacogens. The trace elements and isotopic data from the mafic dykes and lavas in the aulacogens suggest that the mafic magma is derived from partial melting of the subcontinental lithospheric mantle, and contaminated by lower crust, then intruded the pre-existing fractures to form mafic dyke swarms in a rifting environment. The mafic dyke swarms and aulacogens represent a continuous extension event from 1.84-1.77 Ga in response to the breakup of the supercontinent Columbia. (c) 2007 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000252544400005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geosciences, Multidisciplinary; SCI(E); 48; ARTICLE; 1; 103-116; 13
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155994]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Hou, Guiting,Li, Jianghai,Yang, Mohan,et al. Geochemical constraints on the tectonic environment of the Late Paleoproterozoic mafic dyke swarms in the North China Craton[J]. gondwana research,2008.
APA	Hou, Guiting,Li, Jianghai,Yang, Mohan,Yao, Weihao,Wang, Chuancheng,&Wang, Yanxin.(2008).Geochemical constraints on the tectonic environment of the Late Paleoproterozoic mafic dyke swarms in the North China Craton.gondwana research.
MLA	Hou, Guiting,et al."Geochemical constraints on the tectonic environment of the Late Paleoproterozoic mafic dyke swarms in the North China Craton".gondwana research (2008).