New Zircon U-Pb Age of Late Devonian Tuff in Guangxi, South China and the Significance for the Paleo-Tethys Branch Ocean  

作　　者：HU Lisha DU Yuansheng XU Yajun WANG Zhiwen WANG Chenghao 

机构地区：[1]Collage of Marine Geosciences, Key Laboratory of Submarine Geosciences and Prospecting Technology, Ocean University of China [2]Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology (QNLM) [3]State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences

出　　处：《Acta Geologica Sinica(English Edition)》2018年第1期402-403,共2页地质学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(grants No.41602105,41530966,41672106 and 41472086);China Postdoctoral Science Foundation(grant No.2016M590655);the fundamental Research Funds for the Central Universities,Ocean University of China

摘　　要：Objective The eastern extending range of the Paleo-Tethys Ocean in southwest China has always been focused and controversial. At the beginning of this century some scholars proposed that the Paleo-Tethys Branch Ocean may extend to the Babu-Pingxiang and Cengxi areas along the stouthwestern margin of the South China Block （Cai and Zhang, 2009）. However, the pivotal proof of Late Paleozoic ophoilite and magmatic rocks was absent or sporadical in the Guangxi Zhuang Autonomous Region, resulting in insufficient evidence to support this viewpoint. For the first time this work reported the Late Devonian tuff in the Qinzhou area in the south of the Guangxi Zhuang Autonomous Region and conducted zircon U-Pb dating on it in order to constrain the extension of the Paleo-Tethys Ocean in the South China Block.Objective The eastern extending range of the Paleo-Tethys Ocean in southwest China has always been focused and controversial. At the beginning of this century some scholars proposed that the Paleo-Tethys Branch Ocean may extend to the Babu-Pingxiang and Cengxi areas along the stouthwestern margin of the South China Block （Cai and Zhang, 2009）. However, the pivotal proof of Late Paleozoic ophoilite and magmatic rocks was absent or sporadical in the Guangxi Zhuang Autonomous Region, resulting in insufficient evidence to support this viewpoint. For the first time this work reported the Late Devonian tuff in the Qinzhou area in the south of the Guangxi Zhuang Autonomous Region and conducted zircon U-Pb dating on it in order to constrain the extension of the Paleo-Tethys Ocean in the South China Block.

关 键 词：the Paleo-Tethys Branch Ocean New Zircon U-Pb Age of Late Devonian 

分 类 号：P0[天文地球]