%0 Journal Article
%T Zircon U-Pb age and petrogenesis of ore-bearing granitoid for the Chigou Cu-Mo deposit from the Zhashan basin, Shaanxi Province<br>陕西柞山盆地池沟铜钼矿区含矿岩体的锆石U-Pb年龄和岩石成因
%A XIE GuiQing
%A REN Tao
%A LI JianBin
%A WANG RuiTing
%A XIA ChangLing
%A GUO YanHui
%A DAI JunZhi
%A SHEN ZhiChao
%A <br>谢桂青
%A 任涛
%A 李剑斌
%A 王瑞廷
%A 夏长玲
%A 郭延辉
%A 代军治
%A 申志超
%J 岩石学报
%D 2012
%I 
%X There have plenty of Cu-Mo deposits (occurrences) which are genetically associated with intermediate-acid granitoid stock from the Zhashan basin in the Qinling Orogenic Belt, recently huge copper orebody has been discovered in the Chigou Cu-Mo deposit region, but the timing and petrogenesis of ore-bearing granitoids were poorly constrained. In this contribution, ore-bearing granitoids for the Chigou Cu-Mo deposit were selected; geochemistry and LA-MC-ICPMS zircon U-Pb data for these rocks have been carried out. They are dominantly quartz diorite, diorite and porphyritic granite in petrology, and geochemically belong to high potassic calc-alkaline I-type granitoid, geochemical and Sr-Nd isotopic evidence demonstrate that these rocks originated from partial melting of upper mantle and lower crust. The weight average 206Pb/238U ages for these ore-bearing granitoids are ~145Ma. In combined with regional geological characteristics and relation between igneous rocks and mineralization, it is proposed that the Chigou ore-bearing igneous rocks were formed during the Late Jurassic-Early Cretaceous time, and it is indicated that there have regional Late Jurassic-Early Cretaceous granitoid and porphyry-skarn Cu-Mo ploymetallic deposits in the Zhashan basin, synchronously the formation of granitoid batholith or stock and the corresponding porphyry Mo-hydrothermal vein Zn-Pb-Ag deposits in South margin of North China Craton.
%K LA-MC-ICPMS zircon U-Pb age
%K Porphyry Cu-Mo deposit
%K Chigou region
%K Zhashan basin<br>LA-MC-ICPMS锆石U-Pb年龄
%K 斑岩铜矿床
%K 池沟地区
%K 柞山盆地
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=2196949E2245EB6077510E998E035421&yid=99E9153A83D4CB11&vid=D3E34374A0D77D7F&iid=CA4FD0336C81A37A&sid=23CCDDCD68FFCC2F&eid=96C778EE049EE47D&journal_id=1000-0569&journal_name=岩石学报&referenced_num=1&reference_num=49