New Zircon U-Pb Age of the Babu Ophiolites in Southeast Yunnan,China and Constrains of Plate Subduction Time  

作　　者：HUANG Hu DU Yuansheng YANG Jianghai YU Wenchao 

机构地区：[1]State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation,Chengdu University of Technology [2]State Key Laboratory of Biogeology and Environmental Geology,China University of Geosciences

出　　处：《Acta Geologica Sinica(English Edition)》2017年第3期1151-1152,共2页地质学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(grant No.41502109);the 973 Program(grant No.2015CB453000);the China Postdoctoral Science Foundation(grant No. 2015M582528)

摘　　要：Objective The Babu ophiolite in Malipo County of southeastern Yunnan is interpreted as remanant ocean crust and represents a possible branch of Paleo-Tethyan Ocean in South China. It consists mainly of mafic and ultramafic rocks. These rocks are very important to understand the evolution of the Paleo-Tethyan Ocean. However, the Babu ophiolite is still disputed and the mafic and ultramafic rocks have been inferred to be part of the Emeishan large igneous province （LIP） by some researchers. In this paper, we present zircon U-Pb data on the metabasalts in Malipo to reveal the formation time of mafic and ultramafic rocks and their tectonic nature.Objective The Babu ophiolite in Malipo County of southeastern Yunnan is interpreted as remanant ocean crust and represents a possible branch of Paleo-Tethyan Ocean in South China. It consists mainly of mafic and ultramafic rocks. These rocks are very important to understand the evolution of the Paleo-Tethyan Ocean. However, the Babu ophiolite is still disputed and the mafic and ultramafic rocks have been inferred to be part of the Emeishan large igneous province （LIP） by some researchers. In this paper, we present zircon U-Pb data on the metabasalts in Malipo to reveal the formation time of mafic and ultramafic rocks and their tectonic nature.

关 键 词：PB ICP MS Th is New Zircon U-Pb Age of the Babu Ophiolites in Southeast Yunnan China and Constrains of Plate Subduction Time of in 

分 类 号：P542[天文地球—构造地质学] P597.3[天文地球—地质学]