冀西北水泉沟—后沟偏碱性正长杂岩体岩石学、岩石化学特征  

PETROLOGY AND PETROCHEMISTRY OF SHUIQUANGOU HOUGOU SUBALKALINE SYENITE COMPLEX IN NORTHWESTER HEBEI

作　　者：蒋心明 王郁[1] 王正坤[1] 商木元 

机构地区：[1]冶金部天津地质研究院

出　　处：《黄金地质》1996年第4期56-61,共6页Gold Geology

摘　　要：水泉沟—后沟正长杂岩体是冀西北规模最大的偏碱性岩体之一。岩体为５次侵入，８种岩石类型。主要造岩矿物是钾长石和钠长石，少量霓辉石、透辉石。岩石化学与世界偏碱性正长岩相似。从岩石学和岩石化学特征反映是深源同熔型岩浆。Shuiquangou-Hougou syenite complex is one of the largest subalkaline rock bodies in the Northwester Hebei. It can be divided into 5 stages of intrusion and 8 types of intrusive rocks.Kfeldspar and albite are main rockforming minerals.In addition,there are aegirineaugite and diopside.Petrochemistry of the rock body is similar to that of the subalkaline syenite in the world.Petrology and petrochemistry have revealed that shuiquangow-Hougou syenite complex was formed by anatetic magma.

关 键 词：岩石学 岩石化学 偏碱性 正长杂岩体 杂岩 

分 类 号：P588.36[天文地球—岩石学]