河南鲁山地区中—新太古代灰色片麻岩  

Mesoarchean—Neoarchean Grey Gneiss in the Lushan Area,Henan Province

作　　者：杨长秀[1] 王世炎[1] 刘振宏[1] 雷正化[1] 杨长青[1] 

机构地区：[1]河南省地质调查院,郑州450007

出　　处：《地质论评》2008年第3期327-334,共8页Geological Review

基　　金：中国地质调查局"1:25万平顶山市幅区域地质调查"项目资助

摘　　要：河南鲁山地区原划归太古宇太华群中解体出中—新太古代变形侵入体,由魏庄片麻岩和榆树庄片麻岩组成,变质程度达角闪岩相,局部为麻粒岩相。地球化学特征显示高铝质片麻岩特征,原岩为奥长花岗岩—英云闪长岩—花岗闪长岩(TTG岩系),从而为该地区发育中—新太古代花岗岩—绿岩带提供了证据。The Mesoarchean-Neoarchean deformed intrusive bodies had been blocked out from the former Archean Taihua Group in the Lushan area, Henan Province,which is composed of the Weizhu.ang Gneiss and the Yushuzhuang Gneiss, with degree of metamorphism reaching to amphibolite and locally granulite facies. Their geochemical characteristics indicate feature of alluminum-high gneiss, whose protolith were trondhjemite-tonalite-granodiorite（TTG rock series）, so providing the evidence of Early Precambrian Granite-Greenstone belt in the area.

关 键 词：中—新太古代 TTG岩系 鲁山地区 河南 

分 类 号：P588.3[天文地球—岩石学]