%0 Journal Article
%T Devonian magmatism from the southern Lhasa terrane, Tibetan Plateau<br>青藏高原拉萨地体南部的泥盆纪花岗岩
%A DONG Xin
%A ZHANG ZeMing
%A GENG GuanSheng
%A LIU Feng
%A WANG Wei
%A YU Fei
%A <br>董昕
%A 张泽明
%A 耿官升
%A 刘峰
%A 王伟
%A 于飞
%J 岩石学报
%D 2010
%I 
%X Previous investigations have demonstrated that the Lhasa terrane located at South Tibet have experienced the multi-stages of orogenesis during Cenozoic, Mesozoic and Late Paleozoic. However, the present paper firstly reports a Middle Paleozoic magmatic event generated in the southern Lhasa terrane. The studied granite occurs nearby Jiacha County, consists mainly of plagioclase, quartz, K-feldspar and a minor biotite, and shows gneissic or augen structure, indicating variable degrees of ductile deformation. Zircons from granite are typical of magmatic crystallization, and yield a U-Pb concordant age of 366.7±2.5Ma. This result provides an important constraint on the origin, tectonic affinity and early tectonic evolution of the Lhasa terrane.
%K Devonian granite
%K Geochronology
%K Tectonic evolution
%K Lhasa terrane
%K Tibetan Plateau<br>泥盆纪花岗岩
%K 年代学
%K 构造演化
%K 拉萨地体
%K 青藏高原
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=5439E23239A8456C2B8AF5430CBC10B2&yid=140ECF96957D60B2&vid=96C778EE049EE47D&iid=DF92D298D3FF1E6E&sid=A07AB8F8354CD3EE&eid=9FC5A7BC6F92B63D&journal_id=1000-0569&journal_name=岩石学报&referenced_num=2&reference_num=0