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Evolution of the lithospheric mantle beneath the southeastern North China Craton: Constraints from mafic dikes in the Jiaobei terrain

文献类型：期刊论文

作者Cai, Ya-Chun1; Fan, Hong-Rui1; Santosh, M.2,3; Liu, Xuan1; Hu, Fang-Fang1; Yang, Kui-Feng1; Lan, Ting-Guang1; Yang, Yue-Heng4; Liu, Yongsheng5
刊名GONDWANA RESEARCH
出版日期2013-09-01
卷号24期号:2页码:601-621
ISSN号1342-937X
关键词Mafic dikes Petrogenesis Lithospheric mantle Jiaobei terrain Southeastern NCC
DOI10.1016/j.gr.2012.11.013
文献子类Article
英文摘要Two stages of mafic dikes with ages of similar to 117-116 Ma and similar to 95-87 Ma, respectively, are identified in the Jiaobei terrain based on zircon U-Pb ages. The Early Cretaceous mafic-intermediate dikes (ECMDs) and Late Cretaceous mafic dikes (LCMDs) show distinct geochemical and isotopic features. The ECMDs are enriched in large ion lithophile elements (LILE, Rb, Sr, Ba, U and Th) and light rare earth elements (LREE, La, Ce, Pr, Nd, Sm and Eu) with a strong depletion in high field strength elements (HFSE, Nb, Ta, Ti and P). They show uniformly high (Sr-87/Sr-86)(i) (0.70841-0.71387), low epsilon(Nd)(t) values (-18.1 to -13.2), positive (Pb-206/Pb-204)(i) (17.07-17.90) and negative epsilon(Hf)(t) (-21.0 to -6.1) values. These rocks were derived from partial melting of an enriched lithospheric mantle, and the enrichment of the mantle source resulted from source metasomatism imparted by the melts generated from remelting of the subducted lower crust of the Yangtze Craton (YC). In contrast, the LCMDs show lower SiO2 (41.5-50.1 wt.%), lack of HFSE depletion and are depleted in whole rock Nd and zircon Hf isotope. They are interpreted to have sourced from a newly accreted depleted lithospheric mantle generated through continuous erosion of older enriched lithospheric mantle by asthenospheric upwelling, leaving out minor remnants of the older mantle in the newly accreted lithospheric mantle. The geochemical and isotopic characteristics reported in our study demonstrate that the lithospheric mantle beneath the southeastern North China Craton (NCC) was generally enriched during the Early Cretaceous (similar to 120 Ma) and the mechanism of the enrichment may be related to source metasomatism caused by the subducted lower crust of the YC However, in late Cretaceous, the lithospheric mantle beneath southeastern NCC was highly heterogeneous, which might be related to asthenospheric non-uniform erosion. The similar to 116-87 Ma marks the transition from enriched lithospheric mantle to depleted asthenospheric mantle. (C) 2012 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
WOS关键词U-PB ZIRCON ; NORTHWESTERN JIAODONG PENINSULA ; PRESSURE METAMORPHIC ROCKS ; WESTERN SHANDONG PROVINCE ; MESOZOIC ADAKITIC ROCKS ; ORE-FORMING FLUIDS ; EASTERN CHINA ; SULU OROGEN ; VOLCANIC-ROCKS ; LU-HF
WOS研究方向Geology
语种英语
出版者ELSEVIER SCIENCE BV
WOS记录号WOS:000322057600009
资助机构Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Natural Science Foundation of China(41172083) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/87124]  
专题中国科学院地质与地球物理研究所
通讯作者Fan, Hong-Rui
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Kochi Univ, Fac Sci, Div Interdisciplinary Sci, Kochi 7808520, Japan
3.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
5.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Cai, Ya-Chun,Fan, Hong-Rui,Santosh, M.,et al. Evolution of the lithospheric mantle beneath the southeastern North China Craton: Constraints from mafic dikes in the Jiaobei terrain[J]. GONDWANA RESEARCH,2013,24(2):601-621.
APA Cai, Ya-Chun.,Fan, Hong-Rui.,Santosh, M..,Liu, Xuan.,Hu, Fang-Fang.,...&Liu, Yongsheng.(2013).Evolution of the lithospheric mantle beneath the southeastern North China Craton: Constraints from mafic dikes in the Jiaobei terrain.GONDWANA RESEARCH,24(2),601-621.
MLA Cai, Ya-Chun,et al."Evolution of the lithospheric mantle beneath the southeastern North China Craton: Constraints from mafic dikes in the Jiaobei terrain".GONDWANA RESEARCH 24.2(2013):601-621.

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