北秦岭蟒岭岩体的锆石U-Pb年龄-成矿作用与资源评价重点试验室.PDF

20 14 2 　　　　 33 　 1 February, 2014 M I NERAL D EPOSI T S 33 (1):14 ～ 36 　 :0258-7106 (2014)01-0014-23 U -Pb 、 1 2 ＊＊ 2 3 1 1 1 杨　阳, 王晓霞 , 柯昌辉 , 李金宝, 吕星球 , 孟旭阳, 聂政融 (1 , 　100083;2 , 　1000 37;3 , 　710054) 　　, 、 、、。 LA-ICPM S U-Pb , , 、—3 。 , LA-ICPM S U-Pb (157 ±1)M a, SiO2 , , , -;, (14 8±1)Ma ～ (144±1)M a, 、 , -, - I-A ;, (124±2 )M a, 、、、, , I-A 。 , SiO , A O 、T iO 、M g O、CaO、P O 、T Fe O ; 2 2 3 2 2 5 2 3 , , , ;, 3 K、Rb、Ba、Sr , P、N b、T a、Ti 。 , 、, , Eu , Ba、P、Ti Ta、Nb 。 　;U-Pb ;;; :P597+.3　　　　　　　　　:A Zircon U-Pb ages, geochemistry and evolution of Mangling pluton in North Qinling Mountains 1 2 2 3 1 1 YAN G Yang , WA NG XiaoXia , KE ChangHui , L I JinBao , L XingQiu , MENG XuY ang 1 and N IE Z hengRong (1 Schoo of Earth Science and Resources, China U niversity of Geosciences, Beijing 100083, China ;2 M LR K ey Labora tory of M eta ogeny and M inera Assessment, I nstitute o f M inera Resources, CAGS, Beijing 1000 37, China ;3 Schoo of Geoscience and Resources, Changan U niv er sity, Xian 710054, Shaanxi, China) Abstract Located in the No rt h Qin ing be t, the M ang ing p uto n consist s of po rphyritic bio tite monzogranites, mid- coarse-grained biotite monzog ranites, mid-f ine-grained monzog ranites, py roxene-bearing biotite-hornb ende dio rites a