摘要
中条山地区地层主要由涑水片麻杂岩、绛县群、中条群、担山石群和熊耳群组成,该区发育著名的铜矿峪型矿床、胡-篦型矿床和横岭关型矿床。中条山地区郭家沟基性-超基性岩主要侵位涑水片麻杂岩中,岩体由内向外发育透闪岩-变余辉石岩-辉长岩-斜长角闪岩的岩相分带。透闪岩LA-ICP-MS锆石U-Pb显示岩体侵位于2303Ma,属于古元古代。通过岩体野外侵位、覆盖关系,结合已有同位素资料,认为绛县群横岭关亚群沉积时限在2189Ma～2303Ma之间。同时根据岩体构造环境、岩体形态、岩相分带、铜矿化情况,以及铜凹组和篦子沟组两套含矿地层中均出现本期岩浆锆石,认为本区基性-超级性岩中发育有铜成矿作用,找矿前景乐观。
The Zhongtiao Mountain consists mainly of the Sushui gneiss complex,Jiangxian group,Zhongtiao group,Dhanshanshi group and Xiong’er group,which developed Tongkuangyu type copper deposit,Hu-Bi type copper deposit and Henglingguan type copper deposit. The main emplacement of the Guojiagou basic-ultrabasic rocks is the Sushui gneiss complex,and the intrusion with lithological zoning,from the core to the edge,is tremolite-palimpsest pyroxenolite-gabbro-amphibolite. LA-ICP-MS zircon U-Pb of tremolite shows intrusion of rock mass in 2303 Ma,which is a Paleoproterozoic age. Through the field emplacement and coverage of rock mass,combined with isotopic data,we believe that the Hanglingguan subgroup was formed at 2189 ~ 2303 Ma. According to the tectonic setting,shape,lithological zoning and copper mineralization,and both Tongwa Formation and Bizigou Formation,which are two ore-bearing strata,have detrital zircons that from Guojiagou basic-ultrabasic rock,indicating the Guojiagou basic-ultrabasic rocks have copper mineralization,with optimistic ore-potential.
作者
薛生升
林伟
张双奎
王梦琦
范成龙
XUE Shengsheng;LIN Wei;ZHANG Shuangkui;WANG Mengqi;FAN Chenglong(Shanxi Province Geophysical and GeochemicalExploration Institute,Yuncheng,Shanxi 044000;MRL Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037;China University of Geosciences(Beijing),Beijing 100083)
出处
《地质与勘探》
CAS
CSCD
北大核心
2019年第1期64-76,共13页
Geology and Exploration
基金
中国地质调查局项目<重要矿种关键问题调查与矿产地质专题填图试点>(编号:DD20160124)资助
关键词
基性-超基性岩
中条山
横岭关亚群
U-PB年龄
铜镍矿床
basic-ultrabasic rocks
Zhongtiao Mountain
Hanglingguan subgroup
U-Pb age
Cu-Ni sulfide deposit
作者简介
第一作者:薛生升(1986年-),男,地质工程师,现从事固体矿产资源勘查工作。E-mail:554518726@qq.com。
