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Destruction of the North China Craton: De lamination or thermal/chemical erosion? Mineral chemistry and oxygen isotope insights from websterite xenoliths

文献类型：期刊论文

作者Xu, Wen-Liang1,2; Zhou, Qun-Jun1; Pei, Fu-Ping1; Yang, De-Bin1; Gao, Shan2; Li, Qiu-Li3; Yang, Yue-Heng3
刊名GONDWANA RESEARCH
出版日期2013
卷号23期号:1页码:119-129
关键词Craton destruction Delamination Thermal/chemical erosion Websterite xenolith Tectonics North China Craton
ISSN号1342-937X
DOI10.1016/j.gr.2012.02.008
文献子类Article
英文摘要The destruction (or reactivation) of the North China Craton (NCC) is one of the important issues related to the Phanerozoic evolution of eastern China, although the processes of destruction remain debated. Two main mechanisms - delamination and thermal/chemical erosion - have been proposed based on the geochemistry of Mesozoic-Cenozoic basalts and entrained deep-seated xenoliths. A key criterion in distinguishing between these mechanisms is the nature of the melt, derived from delaminated crust or the asthenosphere, that modified the lithospheric mantle. Here we investigate the mechanism of destruction of the NCC based on mineral compositions and oxygen isotopic data from olivines, and strontium isotopic data for clinopyroxenes within websterite xenoliths from the Early Cretaceous Feixian basalts in the eastern NCC. Olivines in websterite xenoliths have higher Mg# (86-86.4), Ni content (2187-2468 ppm), and lower Ca (983-1134 ppm), Ti (58.1-76.1 ppm), and Mn (1478-1639 ppm) contents than olivine phenocrysts (Mg# = 71.0-77.3, Ni = 233-1038 ppm, Ca = 1286-2857 ppm, Ti = 120-300 ppm, and Mn = 2092-4106 ppm) from Late Cretaceous basalts. Additionally, olivines in websterite xenolith have delta O-18 values of 7.10 +/- 0.21 parts per thousand to 8.40 +/- 0.21 parts per thousand evidently higher than those of typical mantle-derived olivines. Similarly, orthopyroxenes (Opx) and clinopyroxenes (Cpx) in the websterite xenoliths have much higher Mg# (86.3-89.2 and 87.5-90.3, respectively), and Ni contents (1097-1491 ppm and 581-809 ppm. respectively) than orthopyroxene- and clinopyroxenephenocrysts (Opx: Mg# = 82.2-83.9, Ni = 730-798 ppm; Cpx: Mg# = 74.2-84.6, Ni = 117-277 ppm) from Late Cretaceous basalts. The Sr-87/Sr-86 ratios of dinopyroxenes in the websterite xenoliths range from 0.70862 to 0.70979, and are much higher than those of clinopyroxene grains from peridotite xenoliths and basalts. These data indicate that olivines are the residue of ancient lithospheric mantle that was modified intensively by a melt derived from recycled continental crust, and that the silicic and calcic metasomatic melt might have been derived from the partial melting of the subducted Yangtze slab and delaminated lower crust of the NCC. The existence of recycled continental crust in the Mesozoic lithospheric mantle implies that delamination was an important mechanism of destruction of the NCC. (c) 2012 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
WOS关键词SINO-KOREAN CRATON ; ZIRCON U-PB ; MELT-PERIDOTITE INTERACTIONS ; MESOZOIC ADAKITIC ROCKS ; LOWER CONTINENTAL-CRUST ; MG-NUMBER SIGNATURE ; MANTLE XENOLITHS ; TRACE-ELEMENTS ; EASTERN CHINA ; OCEANIC-CRUST
WOS研究方向Geology
语种英语
WOS记录号WOS:000312746000009
出版者ELSEVIER SCIENCE BV
资助机构Chinese Ministry of Science and Technology(2009CB825005) ; Chinese Ministry of Science and Technology(2009CB825005) ; Natural Science Foundation of China(90814003 ; Natural Science Foundation of China(90814003 ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan) ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan) ; 90714010) ; 90714010) ; Chinese Ministry of Science and Technology(2009CB825005) ; Chinese Ministry of Science and Technology(2009CB825005) ; Natural Science Foundation of China(90814003 ; Natural Science Foundation of China(90814003 ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan) ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan) ; 90714010) ; 90714010) ; Chinese Ministry of Science and Technology(2009CB825005) ; Chinese Ministry of Science and Technology(2009CB825005) ; Natural Science Foundation of China(90814003 ; Natural Science Foundation of China(90814003 ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan) ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan) ; 90714010) ; 90714010) ; Chinese Ministry of Science and Technology(2009CB825005) ; Chinese Ministry of Science and Technology(2009CB825005) ; Natural Science Foundation of China(90814003 ; Natural Science Foundation of China(90814003 ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan) ; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan) ; 90714010) ; 90714010)
源URL[http://ir.iggcas.ac.cn/handle/132A11/86620]  
专题中国科学院地质与地球物理研究所
通讯作者Xu, Wen-Liang
作者单位1.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China
2.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Wen-Liang,Zhou, Qun-Jun,Pei, Fu-Ping,et al. Destruction of the North China Craton: De lamination or thermal/chemical erosion? Mineral chemistry and oxygen isotope insights from websterite xenoliths[J]. GONDWANA RESEARCH,2013,23(1):119-129.
APA Xu, Wen-Liang.,Zhou, Qun-Jun.,Pei, Fu-Ping.,Yang, De-Bin.,Gao, Shan.,...&Yang, Yue-Heng.(2013).Destruction of the North China Craton: De lamination or thermal/chemical erosion? Mineral chemistry and oxygen isotope insights from websterite xenoliths.GONDWANA RESEARCH,23(1),119-129.
MLA Xu, Wen-Liang,et al."Destruction of the North China Craton: De lamination or thermal/chemical erosion? Mineral chemistry and oxygen isotope insights from websterite xenoliths".GONDWANA RESEARCH 23.1(2013):119-129.

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