%0 Journal Article
%T Geological characteristics and genesis of Yuleken-Halasu superimposed and tectonically reworked porphyry copper-gold (molybdenum) deposit in Qinghe, Xinjiang<br>新疆青河县玉勒肯-哈腊苏叠加改造型斑岩铜金(钼)矿床地质特征及成因
%A XIANG Peng
%A ZHANG LianChang
%A XU XingWang
%A LIU GuoRen
%A LIU ZhenJiang
%A JIN XinDi
%A LI WenJun
%A <br>相鹏
%A 张连昌
%A 徐兴旺
%A 刘国仁
%A 刘振江
%A 靳新娣
%A 李文君
%J 岩石学报
%D 2012
%I 
%X Yuleken-Halasu porphyry copper-gold (molybdenum) deposit, located in the northwestern section of Kalaxianger porphyry copper metallogenic belt, lies on the northeastern margin of Junggar Basin. Granodiorite porphyry and granite porphyry in Early Hercynian are the main ore-bearing porphyries. The wall rocks are basically a set of volcanic-sedimentary rock series in the Middle Devonian Beitashan Formation, intruded by magmatic rocks in Late Hercynian and Indosinian. Of all the deposits in Kalaxianger metallogenic belt, Yuleken-Halasu deposit is the most intensively deformed. A series of schistositized belts occur in Yuleken-Halasu ore area due to impact of the Erqisi fault. Meanwhile, most of the ore-bearing porphyries and the wall rocks are mylonitized and schistositized inordinately. The main ore rocks are not only mineralized in the form of stockwork and dissemination at the early stage of typical porphyry deposit, but also superimposed in the form of mineralization in the schistosity, mylonitized foliation and cleavage at the late stage. Geochronological study indicates that there are several magmatic and tecton-thermal events in Devonian-Triassic and metallogenic events in Devonian-Carboniferous recorded in the metallogenic belt. Through this article and the previous studies, the metallogenic belt, intruded by mass medium-acidic porphyries, was in the island arc tectonic setting related with oceanic subduction in Middle-Late Devonian (390~360Ma), accompanied by large-scale Cu-Mo mineralization. The whole metallogenic belt went through collision stage with intensely tectonic reworking and superimposed mineralization in Early Carboniferous (360~330Ma). Furthermore, Cu-Mo mineralization was developed along the mylonite foliation. The post-collision stage in Middle-Late Carboniferous (330~300Ma) was characterized by superimposed molybdenite + chalcopyrite + K-feldspar veins mineralization. The metallogenic belt underwent post-orogenic extension stage in Early Permian (270~260Ma), causing Cu-Mo filled and re-enriched in structural fracture cleavage, which resulted in superimposed mineralization developed along the fracture cleavage. In Triassic, the whole metallogenic belt was in intracontinental orogenic stage, accompanied by vein-type superimposed mineralization which was associated with low-angle overthrust faults. Therefore, Yuleken is a typical porphyry deposit which is characterized by superimposition and tectonic reworking.
%K Kalaxianger porphyry metallogenic belt
%K Yuleken porphyry copper deposit
%K Superimposition and tectonic reworking
%K Junggar Basin
%K Xinjiang<br>卡拉先格尔斑岩成矿带
%K 玉勒肯斑岩铜矿
%K 叠加改造型矿床
%K 新疆准噶尔
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=B5A93E035C82D3EFB9D1D54348E5469C&yid=99E9153A83D4CB11&vid=D3E34374A0D77D7F&iid=5D311CA918CA9A03&sid=D0540156A5D11138&eid=F8B2ABE6C7E9783B&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=18