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Precisely dating Paleozoic kimberlites in the North China Craton and Hf isotopic constraints on the evolution of the subcontinental lithospheric mantle

文献类型：期刊论文

作者Li, Qiu-Li1; Wu, Fu-Yuan1; Li, Xian-Hua1; Qiu, Zhi-Li2; Liu, Yu1; Yang, Yue-Heng1; Tang, Guo-Qiang1
刊名LITHOS
出版日期2011-09-01
卷号126期号:1-2页码:127-134
关键词Kimberlite North China Craton Baddeleyite Hf isotope Subcontinental lithospheric mantle
ISSN号0024-4937
DOI10.1016/j.lithos.2011.07.001
文献子类Article
英文摘要Kimberlite, a deep-sourced ultramafic potassic rock, carries not only diamond, but also invaluable mantle xenoliths and/or xenocrysts, which are important for tracking the evolution of subcontinental lithospheric mantle (SCLM). However, it is challenging to accurately determine the emplacement age of kimberlite and its compositions of primary magma because of modifications by crustal and/or mantle contamination and post-emplacement alteration. This paper reports emplacement ages of diamondiferous kimberlites in Mengyin and Fuxian of the North China Craton (NCC) using three different dating methods. For Mengyin kimberlite, single-grain phlogopite Rb-Sr dating yields an isochron age of 485 +/- 4 Ma, U-Th-Pb analyses on perovskite give a (238)U-(206)Pb age of 480.6 +/- 2.9 Ma and a (232)Th-(208)Pb age of 478.9 +/- 3.9 Ma, and baddeleyite yields a (207)Pb-(206)Pb age of 480.4 +/- 3.9 Ma. For Fuxian kimberlite, baddeleyite gives a (207)Pb-(206)Pb age of 479.6 +/- 3.9 Ma, indicating that the Paleozoic kimberlites in the NCC were emplaced at similar to 480 Ma. Numerous lines of evidence indicate that the studied baddeleyites are xenocrysts from the SCLM, and can be used to constrain Hf isotope compositions (epsilon(Hf)(t)similar to-6) of the SCLM when kimberlite erupted. Combined with data from Mesozoic-Cenozoic mantle-derived rocks and xenoliths, the Hf isotope evolution trend of the SCLM beneath NCC before craton destruction was tentatively constructed, which suggested that the Archean SLCM was enriched by metasomatism at similar to 1.3 Ga. Further Hf isotope investigations on additional SCLM-derived materials could be used to compare with the constructed Hf isotope evolution trend before craton destruction to determine when lithospheric thinning occurred. (C) 2011 Published by Elsevier B.V.
WOS关键词SINO-KOREAN CRATON ; BENEATH EASTERN CHINA ; U-PB ; CRUSTAL EVOLUTION ; TEMPORAL EVOLUTION ; NORTHEASTERN CHINA ; ZIRCON MEGACRYSTS ; AGE ; XENOLITHS ; SR
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
WOS记录号WOS:000295064200009
出版者ELSEVIER SCIENCE BV
资助机构NSFC(40973044 ; NSFC(40973044 ; NSFC(40973044 ; NSFC(40973044 ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; 40873045) ; 40873045) ; 40873045) ; 40873045) ; NSFC(40973044 ; NSFC(40973044 ; NSFC(40973044 ; NSFC(40973044 ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; 40873045) ; 40873045) ; 40873045) ; 40873045) ; NSFC(40973044 ; NSFC(40973044 ; NSFC(40973044 ; NSFC(40973044 ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; 40873045) ; 40873045) ; 40873045) ; 40873045) ; NSFC(40973044 ; NSFC(40973044 ; NSFC(40973044 ; NSFC(40973044 ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Ministry of Land and Resources of the PRC(200811012) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; Institute of Geology and Geophysics, Chinese Academy of Sciences(ZC0801) ; 40873045) ; 40873045) ; 40873045) ; 40873045)
源URL[http://ir.iggcas.ac.cn/handle/132A11/74196]  
专题中国科学院地质与地球物理研究所
通讯作者Li, Qiu-Li
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Sun Yat Sen Univ, Dept Earth Sci, Guangzhou 510275, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Li, Qiu-Li,Wu, Fu-Yuan,Li, Xian-Hua,et al. Precisely dating Paleozoic kimberlites in the North China Craton and Hf isotopic constraints on the evolution of the subcontinental lithospheric mantle[J]. LITHOS,2011,126(1-2):127-134.
APA Li, Qiu-Li.,Wu, Fu-Yuan.,Li, Xian-Hua.,Qiu, Zhi-Li.,Liu, Yu.,...&Tang, Guo-Qiang.(2011).Precisely dating Paleozoic kimberlites in the North China Craton and Hf isotopic constraints on the evolution of the subcontinental lithospheric mantle.LITHOS,126(1-2),127-134.
MLA Li, Qiu-Li,et al."Precisely dating Paleozoic kimberlites in the North China Craton and Hf isotopic constraints on the evolution of the subcontinental lithospheric mantle".LITHOS 126.1-2(2011):127-134.

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来源：地质与地球物理研究所

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