Destruction of the North China Craton

查看全文 作　　者：ZHU [1]RiXiang;XU [2]YiGang;ZHU [3]Guang;ZHANG [1]HongFu;XIA [4]QunKe;ZHENG [1]TianYu

机构地区：[1]State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;[2]State Key Laboratory oflsotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;[3]School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;[4]School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China

出　　处：《Science China Earth Sciences》索引2012年第55卷第10期,共23页

基　　金：supported by National Natural Science Foundation of China (Grant Nos.90714001,90714004,90714008,90714009,91014006,91114206) 摘　　要：A National Science Foundation of China(NSFC) major research project,Destruction of the North China Craton(NCC),has been carried out in the past few years by Chinese scientists through an in-depth and systematic observations,experiments and theoretical analyses,with an emphasis on the spatio-temporal distribution of the NCC destruction,the structure of deep earth and shallow geological records of the craton evolution,the mechanism and dynamics of the craton destruction.From this work the following conclusions can be drawn:(1) Significant spatial heterogeneity exists in the NCC lithospheric thickness and crustal structure,which constrains the scope of the NCC destruction.(2) The nature of the Paleozoic,Mesozoic and Cenozoic sub-continental lithospheric mantle(CLM) underneath the NCC is characterized in detail.In terms of water content,the late Mesozoic CLM was rich in water,but Cenozoic CLM was highly water deficient.(3) The correlation between magmatism and surface geological response confirms that the geological and tectonic evolution is governed by cratonic destruction processes.(4) Pacific subduction is the main dynamic factor that triggered the destruction of the NCC,which highlights the role of cratonic destruction in plate tectonics. 关键词：中国北方板块构造华北克拉通国家科学基金会大陆岩石圈地幔地质记录水分含量晚中生代

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Destruction of the North China Craton

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