%0 Journal Article
%T Indosinian collision-orogenic system of Chinese continent and its orogenic mechanism<br>中国大陆印支碰撞造山系及其造山机制
%A XU ZhiQin
%A YANG JingSui
%A LI HuaQi
%A WANG RuiRui
%A CAI ZhiHui
%A <br>许志琴
%A 杨经绥
%A 李化启
%A 王瑞瑞
%A 蔡志慧
%J 岩石学报
%D 2012
%I 
%X The closure of the large Paleo-Tethyan Ocean at the T3-J2 period induced collisions of many microterrains and formed huge Paleo-Tethys orogenic belts in South Asia, also known as Indosinian orogenic belts. The Indosinian orogenic belts of the Chinese continent and adjacent areas shows a "T"-shaped composite orogeny. Studies have shown that the western Indosinian "Bayan Har-North Qiangtang-South Qiangtang-Lasha" orogenic belts were formed in the Paleo-Tethys setting of multi-ocean basins, multi-terrains and multi-island arcs". Subduction and closure of Paleo-Tethyan ocean basins yielded a wide accretional orogeny in island arcs, accretionary wedges and high-pressure metamorphic belts, as well as large-scale orogenic collage due to multi-terrains collision orogeny charecterized by crustal deformations of syn-cleavage folds, thrusts and strike-slip faults. The eastern Indosinian orogenic system is the direct collision result between the North China and Yangtze blocks. The Songpan-Ganzi and South Qinling orogenic belts located above the Yangtze passive margin show large-scale deep decollement orogenic mechanism between the Upper Proterozoic metamorphic basement and Paleozoic-Triassic covers, as well as intensive shear strain of the Yangtze upper crust. The deep subduction (>100km) of the Yangtze crust and root extrusion mechanism yielded large-scale high pressure/ultra-high pressure metamorphic belts exposed in the Dabie-Sulu orogenic belt.
%K Indosinian
%K Collision-orogenic system
%K Mechanism<br>印支
%K 碰撞造山系
%K 机制
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=098B0100FA0779303D3F0988166255ED&yid=99E9153A83D4CB11&vid=D3E34374A0D77D7F&iid=B31275AF3241DB2D&sid=A87AC493625B15AF&eid=E8941A3800A46ABD&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=66