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《JOURNAL OF KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY》 1999-01
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Plate terrane Tectonics of the West Yunnan

Li Feng (Department of Land Exploration and City Planning,Kunming University of Science and Technology,Kunming 650093) Duan Jiarui (Department of Geology,Central South University of Technology,Changsha 410083)  
Tectonically,the west Yunnan in the Sanjiang area is situated at the conjunction belt between the super scale Gondwana (or Indian continent) and Eurasia (or Yunnan continent), and is composed of several converged and assembled microplates.Based on its tectonic features,it can be divided into four microplates (i e Lanping Simao,Baoshan,Changning Menliang and Tengchong) and four main convergent assemble belts(i e Jingshajiang Honghe,Lancangjiang,Nujiang and Keje Nandinghe).Furthermore,the former can be divided into 12 secondary tectonic units which include metamorphic terranes,rifes,continental shelf taphrogens,post collision taphrogens,island arcs,ophiolite melange belts etc.For the latter,the Lancangjiang belt is the most important convergent assemble one.Various data show that paleo Tethys in paleozoic,mid Tethys in Trassic existed extensively in the west Yunnan,but the new Tethys only appeared along Nujiang convergent belt.The tectonic evolution of Sanjiang area was controlled by the pleo ,mid and new Tethys spreading and assembling.
【Fund】: 云南省应用基础研究项目
【CateGory Index】: P542.4
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