太白维山中生代火山岩特征及其与成矿的关系  

CHARACTERISTICS AND MINERALIZATION OF THE MESOZOIC VOLCANIC ROCKS IN TAIBAI WEISHAN AREA,NORTH SHANXI PROVINCE

作　　者：张连营[1] 李兆龙[1] 樊秉鸿 唐耀林 马丽华[2] 

机构地区：[1]冶金部天津地质研究院 [2]冶金部第三地质勘查局

出　　处：《贵金属地质》1997年第2期101-113,共13页

基　　金：白银基金委员会资助

摘　　要：晋北太白维山火山岩属钾质碱性玄武岩系列，产于板块内部活化带，来源于上地幔或下部地壳，被上部地壳物质混染，为壳幔源型或同熔型火山岩．火山岩与Ａｇ（Ｐｂ、Ｚｎ）矿化关系密切，是成矿热液和矿质的主要来源之一．Based on the study on geology,petrochemistry,rare earth elements,trace elements and stable isotopes,it is proved that the Mesozoic volcanic rocks in Taibai Weishan area,north Shanxi Province,are composed mainly of latite,trachyandesite,trachyte,rhyolite and their clastic rocks The subvolcanic rocks are mainly quartz porphyry The volcanic rocks are rich in potassium and belong to alkali basalt series They occure in mobilizational belt of inner plate It is believed that the magma of the volcanic rocks generated from partial melting of the material at higher mantle,but was contaminated by crustal matter In addition,there is a close relationship between the volcanic rocks and silver mineralization

关 键 词：中生代 火山岩 成矿 中生代 

分 类 号：P588.14[天文地球—岩石学] P612[天文地球—地质学]