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  4. 岩石圈演化国家重点实验室
Multi-stage evolution of the Xuhuai rift: Insights from the occurrence and compositional profiles of doleritic sills in the southeastern margin of the North China Craton

文献类型：期刊论文

作者Su, Xiangdong1,4,5; Peng, Peng1,4,5; Zhu, Renzhi3; Mao, Ya-jing2,4; Zhang, Zhiyue1,4,5; Sun, Fengbo1,4,5
刊名GONDWANA RESEARCH
出版日期2020-06-01
卷号82页码:221-240
关键词Neoproterozoic Large Igneous Province Mafic sill Magma plumbing system Xuhuai rift
ISSN号1342-937X
DOI10.1016/j.gr.2020.01.003
英文摘要Various types of igneous suites occurred between 930 Ma and 890 Ma in the North China craton are known to represent a large igneous province (UP). However, the magma plumbing system of this LIP and its potential consequence to a breakup event are poorly understood. We report morphology, aystal size distribution of plagioclase, and whole-rock and mineral geochemistry profiles of this LIP represented by the two decoupled mafic sill complexes (Niutishan and Pingshan) in the Xuhuai basin. In terms of petrography and whole-rock geochemistry, unlike the lower-level doleritic Niutishan sill, the Pingshan sill is subdivided into an upper and a lower sequence that meets at a Sandwich Horizon but lacks stratification. The significant En reversals present an almost M-shaped profile that differs from a C-shaped profile as previously revealed in the Niutishan sill. Quantitative textural analyses show relatively strong plagioclase orientation in the lower sequence of the Pingshan sill, which is attributed to magma flow. The Pingshan sill is interpreted to have been constructed as multiple magma injections from crustal magma chambers based on the crystal size distribution and the varied crystallization pressure (5.1-7.5 kbar) of dinopyroxene crystals. Similar to the far-field radiating Dashigou dyke swarm (c. 925 Ma), the Niutishan sill is enriched in incompatible elements, which may represent the initiation of the Xuhuai rifting. However, the depleted features of the diamond-bearing Pingshan sill and the other coeval doleritic sills (916-890 Ma) were probably related to the subsequent process switched from continental rifting to lithospheric rupture in the divergent stage of the Wilson cycle. The occurrence of the intrusive rocks evolving from an early radiating dyke swarm to later sill complexes indicates a time-transgressive change from radial to planar patterns, implying that it was the upwelling asthenospheric plume material, instead of plate boundary processes, governed the initial and early evolution of this intracontinental rift. (C) 2020 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
WOS关键词CRYSTAL SIZE-DISTRIBUTION ; LAYERED MAFIC INTRUSION ; U-PB ; WHOLE-ROCK ; CHEMICAL CLASSIFICATION ; SKAERGAARD INTRUSION ; LIAODONG PENINSULA ; IGNEOUS PROVINCE ; PHASE-RELATIONS ; MA
资助项目NSFC[41890833] ; NSFC[41772192] ; NSFC[41702362] ; CAS projects[QYZDB-SSW-DQC04281712250] ; CAS projects[XDB41000000]
WOS研究方向Geology
语种英语
WOS记录号WOS:000530084800012
出版者ELSEVIER
资助机构NSFC ; NSFC ; NSFC ; NSFC ; CAS projects ; CAS projects ; CAS projects ; CAS projects ; NSFC ; NSFC ; NSFC ; NSFC ; CAS projects ; CAS projects ; CAS projects ; CAS projects ; NSFC ; NSFC ; NSFC ; NSFC ; CAS projects ; CAS projects ; CAS projects ; CAS projects ; NSFC ; NSFC ; NSFC ; NSFC ; CAS projects ; CAS projects ; CAS projects ; CAS projects
源URL[http://ir.iggcas.ac.cn/handle/132A11/96721]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Peng, Peng
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.Nanjing Univ, Sch Earth Sci & Engn, Inst Geofluids, State Key Lab Mineral Deposit Res, Nanjing 210023, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Su, Xiangdong,Peng, Peng,Zhu, Renzhi,et al. Multi-stage evolution of the Xuhuai rift: Insights from the occurrence and compositional profiles of doleritic sills in the southeastern margin of the North China Craton[J]. GONDWANA RESEARCH,2020,82:221-240.
APA Su, Xiangdong,Peng, Peng,Zhu, Renzhi,Mao, Ya-jing,Zhang, Zhiyue,&Sun, Fengbo.(2020).Multi-stage evolution of the Xuhuai rift: Insights from the occurrence and compositional profiles of doleritic sills in the southeastern margin of the North China Craton.GONDWANA RESEARCH,82,221-240.
MLA Su, Xiangdong,et al."Multi-stage evolution of the Xuhuai rift: Insights from the occurrence and compositional profiles of doleritic sills in the southeastern margin of the North China Craton".GONDWANA RESEARCH 82(2020):221-240.

入库方式： OAI收割

来源：地质与地球物理研究所

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