%0 Journal Article
%T Tectonic framework of North China Block and its cratonization in the early Precambrian<br>华北陆块基底构造格局及早期大陆克拉通化过程
%A Li Jianghai
%A Qian Xianglin
%A Huang Xiongnan
%A Liu Shuwen
%A <br>李江海
%A 钱祥麟
%J 岩石学报
%D 2000
%I 
%X The tectonic division of North China Block(NCB) basement and its evolution in early Precambrian is an important issue, as many efforts are concentrated in its petrology, metamorphic geology and isotopic chronology. Recently, many new evidences are revealed, which bring new light to its tectonic evolution in early Precambrian. Based upon preliminary tectonic analysis and isotopic age database, we subdivide NCB's basement into following unites from west to east: 1) Ordos Neoarchean khondalites associated with passive continental margin(2.50Ga); 2) Hengshan Chengde Neoarchean high pressure granulite bearing tectonic belt(2.50~2.45Ga); 3) Wutai Dengfeng island arc complex and suture zone( 2.50Ga ); 4) Taihang Neoarchean accretionary prism(2.60Ga); 5) West Shandong island arc TTG complex greenstone belts(2.70~2.60Ga); and 6) Liaoning Mesoarchean relic blocks(>2.70Ga). Furthermore, Lliang Zhongtiao rifting genetic supracrustal belts (2.50~2.30Ga) are superimposed upon the central portion of NCB, and a huge granulite facies province(GFP) occurs along its northern margin associated with south directed subduction accretion and reworking in the Palaeoproterozoic (2.50~2.40Ga). With plate tectonic model, the tectonic evolution of NCB from Neoarchean to early Palaeproterozoic could be well interpreted; its cratonization involves at least three periods of accretion or collision. At first, West Shandong island arc was formed along the western margin of Liaoning Block in the Neoarchean. Lately, Ordos passive margin subducted to the east in Neoarchean, leading to generation of Wutai island arc and collision of Ordos with Wutai. Finally, subduction belt jumped to the northern margin of NCB resulted in the opening of Lliang Zhongtiao rift in its central portion, and formation of GFP along its northern margin (2.50~2.40Ga). The closure of Lliang Zhongtiao rift is associated with the long distance intra plate orogeny in the Palaeoproterozoic (2.30Ga), marking the finial cratonization of NCB.
%K North China
%K Neoarchean
%K Tectonic division
%K TTG complex
%K Accretion of Craton<br>杂岩
%K 表壳岩系
%K 板块构造
%K 华北陆块
%K 基底构造格局
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=501E440F4138E3B6&yid=9806D0D4EAA9BED3&vid=7801E6FC5AE9020C&iid=CA4FD0336C81A37A&sid=CA4FD0336C81A37A&eid=F3090AE9B60B7ED1&journal_id=1000-0569&journal_name=岩石学报&referenced_num=35&reference_num=108