Zircon U-Pb Geochronological Evidence for the Evolution of the Nan-Uttaradit Suture in Northern Thailand

摘要：

　　The Nan-Uttaradit suture is marked by a narrow N-S trending and discontinuous ophiolite belt in northern Thailand.This suture zone is a mélange composed of gabbro, tholeiitic metabasalt, andesite and radiolarian chert.Samples of gabbro and meta-basalt in the Nan-Uttaradit suture yield zircon U-Pb ages of 311±10 and 316±3 Ma, respectively, interpreted as the crystallization ages of the rocks, suggesting the Nan-Uttaradit Ocean existed in the Late Carboniferous.Our results indicate that the Nan-Uttaradit Ocean co-existed with the Ailaoshan-Jinshajiang Ocean to the north and was probably an along-strike extension of the latter.

关键词： Nan-Uttaradit suture ophiolite melange zircon U-Pb age northern Thailand

作者: Wenqiang Yang Xin Qian Qinglai Feng Shangyue Shen Chongpan Chonglakmani

作者单位: Wuhan Center of Geological Survey, Wuhan 430205, China;State Key Laboratory of Geological Processes State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, School of Geotechnology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand

会议类型: 国际会议

会议名称: 第二届亚洲特提斯造山与成矿国际学术研讨会

会议地点: 武汉

会议语种:英文

页码: 378-390

在线出版日期: 2015-10-16（万方平台首次上网日期，不代表论文的发表时间）