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  4. 岩石圈演化国家重点实验室
Magma flow pattern of the 1.78 Ga dyke swarm of the North China Craton during the initial assembly of the Supercontinent Nuna/Columbia: Constraints from rock magnetic and anisotropy of magnetic susceptibility studies

文献类型：期刊论文

作者Xu, Huiru1,2; Yang, Tao2,3; Dekkers, Mark J.3; Peng, Peng1; Li, Shihu1,4; Deng, Chenglong1; Zhu, Rixiang1
刊名PRECAMBRIAN RESEARCH
出版日期2020-08-01
卷号345页码:20
ISSN号0301-9268
关键词Anisotropy of magnetic susceptibility Rock magnetism Dyke swarm Tectonic setting North China Craton Supercontinent Nuna/Columbia
DOI10.1016/j.precamres.2020.105773
英文摘要The geodynamic origin of the 1.78 Ga dyke swarm in the North China Craton (NCC) is long debated. It is considered either a post-collision process or paleoplume-related. Constraining its origin is essential for the reconstruction of the NCC position within the supercontinent Nuna (also referred to as Columbia). Here, we report on the rock-magnetism and anisotropy of magnetic susceptibility (AMS) of thirty-three 1.78 Ga dykes, to constrain the magma center of the igneous event. The samples were collected from the entire swarm across the NCC. Magnetite appears to be the dominant magnetic mineral in all the dykes, occasionally with minor maghemite, while the magnetite grain size within the dykes is generally increasing from south to north. AMS results of the dykes portray a magma flow-related fabric. Over half of the studied dykes show a predominance of horizontal to subhorizontal magmatic flow, while a few have been formed by vertical intrusion. These observations imply that the 1.78 Ga dyke swarm may have been generated by sustained magma flow from a magmatic source centered at the south margin of the NCC. During dyke propagation, some localized magma subchambers may have been formed; they could be responsible for the less common vertically intruded dykes and the EW-trending dykes. Therefore, a plume-related tectonic setting for the 1.78 Ga dyke swarm is more compelling. With the eruption center along the margin of the NCC, it may serve as an essential criterion to search for possible counterparts in other tectonic units within Nuna/Columbia to evaluate the proximity of the NCC with them.
WOS关键词SAO-FRANCISCO CRATON ; LARGE IGNEOUS PROVINCE ; U-PB GEOCHRONOLOGY ; PALEO-MESOPROTEROZOIC SUPERCONTINENT ; LA-PLATA CRATON ; VOLCANIC-ROCKS ; MAFIC DYKES ; DIKE SWARM ; PALEOPROTEROZOIC EVOLUTION ; SYNTECTONIC EMPLACEMENT
资助项目National Natural Science Foundation of China[41974078] ; National Natural Science Foundation of China[41604059] ; National Natural Science Foundation of China[41874105] ; National Natural Science Foundation of China[41890833] ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)[CUGL180804] ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan)[SMIL-2018-04]
WOS研究方向Geology
语种英语
出版者ELSEVIER
WOS记录号WOS:000538145800011
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan) ; Open Fund of Hubei Subsurface Multi-scale Imaging Key Laboratory, China University of Geosciences (Wuhan)
源URL[http://ir.iggcas.ac.cn/handle/132A11/97150]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Xu, Huiru
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.China Univ Geosci, Inst Geophys & Geomat, Hubei Subsurface Multiscale Imaging Key Lab, Wuhan, Peoples R China
3.Univ Utrecht, Dept Earth Sci, Paleomagnet Lab Ft Hoofddijk, Utrecht, Netherlands
4.Univ Lancaster, Lancaster Environm Ctr, Lancaster, England
推荐引用方式
GB/T 7714		 Xu, Huiru,Yang, Tao,Dekkers, Mark J.,et al. Magma flow pattern of the 1.78 Ga dyke swarm of the North China Craton during the initial assembly of the Supercontinent Nuna/Columbia: Constraints from rock magnetic and anisotropy of magnetic susceptibility studies[J]. PRECAMBRIAN RESEARCH,2020,345:20.
APA Xu, Huiru.,Yang, Tao.,Dekkers, Mark J..,Peng, Peng.,Li, Shihu.,...&Zhu, Rixiang.(2020).Magma flow pattern of the 1.78 Ga dyke swarm of the North China Craton during the initial assembly of the Supercontinent Nuna/Columbia: Constraints from rock magnetic and anisotropy of magnetic susceptibility studies.PRECAMBRIAN RESEARCH,345,20.
MLA Xu, Huiru,et al."Magma flow pattern of the 1.78 Ga dyke swarm of the North China Craton during the initial assembly of the Supercontinent Nuna/Columbia: Constraints from rock magnetic and anisotropy of magnetic susceptibility studies".PRECAMBRIAN RESEARCH 345(2020):20.

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