喀喇沁—北票地区太古宙花岗岩-绿岩地体特征及其对金矿控制作用探讨  

GEOLOGICAL FEATURES OF ARCHEAN GRANITE-GREENSTONE TERRANE AND A DISCUSSION ON ITS CONTROLLING ROLE ON GOLD DEPOSIT IN KALAQIN-BEIPIAO DISTRICT

作　　者：王传泰[1] 曾玖吾 

机构地区：[1]冶金工业部天津地质研究院,天津300061

出　　处：《黄金地质》1995年第2期9-13,共5页Gold Geology

基　　金：国家重点黄金科技攻关项目!90051-01-4-3

摘　　要：通过对区内太古宙变质岩的岩石类型、产状特征、原岩类型讨论认为，喀喇沁－北票地区的太古宙变质岩石属于火山－沉积岩和花岗质侵入岩变质建造。可以划分为两种不同系列的组成：（1）斜长角闪岩＋磁铁石英岩＋角闪石岩、辉石宕，代表了本区的“绿岩”组分；（2）斜长片麻岩，代表了太古宙中酸性侵入体（TTG岩套）。本区的太古宙花岗岩－绿岩地体经受了早期塑性变形和后期脆性变形、中生代的强烈花岗质岩浆侵入作用。金矿床受“绿岩带”控制。Based on the type, occurrence, protolith type of Archean metamorphic rock in KalaqinBeipiao district, Archean metamorphic rock in this district is considered to belong to themetamorphic formation of volcanic-sedimentary rock and granitic intrusive rock. It is dividedinto two different series of components: ①amphibolite+magnetite-quartz rock+hornblenditeand pyroxenite, representing 'greenstone' component in this district ; ② plagiogneiss,representing Archean intermediate-acidic intrusive mass (TTG rock suite). Archean granite-greenstone terrane in the district is subjected to early plastic and late brittle deformation andintense intrusion of Mesozoic granite magma. The gold deposit is controlled by Archeangreenstone belts.

关 键 词：金矿床 控矿构造 花岗岩 绿岩 地体 

分 类 号：P618.510.2[天文地球—矿床学]