%0 Journal Article
%T Study on the metallogenesis during the early stage of continental collision in southern Gangdese, Tibet<br>西藏冈底斯南部陆陆碰撞早期成矿作用分析
%A HUANG WenTing
%A LIANG HuaYing
%A WU Jing
%A WANG ChunLong
%A ZOU YinQiao
%A WANG XiuZhang
%A XU JiFeng
%A Charllote M ALLEN
%A <br>黄文婷
%A 梁华英
%A 伍静
%A 王春龙
%A 邹银桥
%A 王秀璋
%A 许继峰
%A Charllote M ALLEN
%J 岩石学报
%D 2013
%I 
%X Many porphyry Cu-Mo and Cu-Pb-Zn polymetal deposits have been found in the southern Gangdese belt, forming a porphyry copper ore belt and a polymetal ore belt, respectively. Previous geochronologic results indicate that most deposits in the southern Gangdese belt were formed after 30Ma and in post-collisional extension evnironment. In this paper, we analyze zircon U-Pb age of igneous rocks closely associate with the Jialong skarn Fe deposit and the Sadang Au-Ag deposit, respectively, and molybdenite Re-Os age of the Duodigou skarn Mo deposit in the southern Gangdese. The Jialong biotite monzonite granite closely associated with skarn Fe deposit has zircon LA-ICP-MS U-Pb age of 61.1±0.4Ma with MSWD=0.94. The Sadang andesite closely associated with Au-Ag mineralization has zircon LA-ICP-MS U-Pb age of 62.6±0.5Ma with MSWD=1.51. The molybdenite Re-Os model ages of the Duodigou skan Mo deposit varies from 64.3±0.8Ma to 69.2±3.3Ma, with an average weight age of 66.7±6.4Ma, MSWD=8.1. Our new results suggest that the three deposits own their origin to the magmatic events triggered by early Indus-Eurasia collision. Our results, together with former work, reveal that the southern Gangdese has undergone large-scale mineralization associated with the strong magmatic activities during the early Indus-Eurasia collision. It is, therefore, suggested that the southern Gangdese could be an important target area for mineralization related to early Indus-Eurasia collision.
%K Gangdese
%K Continental collision
%K Ore forming age
%K Tibet<br>冈底斯带
%K 陆陆碰撞
%K 成矿时代
%K 西藏
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=3D77F90660D80BD8E35A8EB2E7D14934&yid=FF7AA908D58E97FA&vid=771469D9D58C34FF&iid=E158A972A605785F&sid=794F46304592E8E6&eid=D4D26E96843E8F48&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=72