%0 Journal Article
%T Geochronology of the Dasongpo tin deposit, Yunnan Province: Evidence from zircon LA-ICP-MS U-Pb ages and cassiterite LA-MC-ICP-MS U-Pb age<br>云南腾冲大松坡锡矿成矿年代学研究:锆石 LA-ICP-MS U-Pb年龄和锡石LA-MC-ICP-MS U-Pb年龄证据
%A MA Nan
%A DENG Jun
%A WANG QingFei
%A WANG ChangMing
%A ZHANG Jing
%A LI GongJian
%A <br>马楠
%A 邓军
%A 王庆飞
%A 王长明
%A 张静
%A 李龚健
%J 岩石学报
%D 2013
%I 
%X The Dasongpo tin deposit is located in Tengchong-Lianghe Sn-W metallogenic belt in the Sanjiang Tethys metallogenic domain, which is related to Guyong batholith. In the Dasongpo tin deposit, the Xiaolonghe biotite-granite and monzogranite yielded zircon U-Pb ages of 71.5±2.1Ma~75.3±4.2Ma, and 70.3±3.2Ma respectively, likely represents crystallization age of magma. Few researches have reported on the cassiterite LA-MC-ICP-MS U-Pb dating in China and overseas. In order to constrain the timing of metallogenic age better, we carried out cassiterite U-Pb dating for the greisen-type ore with age of 75.5±2.6Ma. The ages of the Xiaolonghe tin-bearing granitoid are similar with those of the Guyong batholith, indicating the tin-bearing granitoid as a part of the Guyong batholith. Metallogenic age is similar with that of tin-bearing granitoid, indicating their formation at the same time from the subduction of the Neo-Tethys Ocean.
%K U-Pb dating
%K Xiaolonghe rock mass
%K Guyong batholith
%K Dasongpo
%K Tengchong<br>U-Pb年龄
%K 小龙河岩体
%K 古永岩基
%K 大松坡锡矿床
%K 腾冲
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=3D77F90660D80BD814E6CFADE2ED2F8B&yid=FF7AA908D58E97FA&vid=771469D9D58C34FF&iid=E158A972A605785F&sid=7C786AA9670CF26C&eid=A31F2945A5873795&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=64