华北地台东部花岗岩容矿型金矿床的时空演化  

TEMPORAL-SPATIAL EVOLUTION OF GRANITOID-HOSTED GOLD DEPOSITS IN EASTERN PART OF NORTH CHINA PLATFORM

作　　者：梁华英[1] 王秀璋[1] 程景平[1] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640

出　　处：《长春科技大学学报》2001年第4期328-332,共5页Journal of Changchun University of Science and Technology

基　　金：国家自然科学基金资助项目 ( 4 9772 114 ;4 93 72 10 5 )

摘　　要：华北地台东部分布有众多的花岗岩型金矿床 ,按照岩体与矿化的时间关系可分为同侵入岩型及后侵入岩型两类。前者主要分布在冀、辽接壤地区 ,成岩与成矿时代相近 ,为中侏罗世 ;后者主要分布在辽宁及山东等地 ,成矿比成岩要晚 2 0～ 12 0Ma以上 ,成岩时代主要为侏罗纪 ,成矿时代为白垩纪。NWW向SEE方向金矿化时代变新 ,可能显示出中生代太平洋板块使华北地台活化的作用向东迁移并对金矿床形成起了控制作用 ,同时在华北地台北缘从南向北矿化变新也显示出西伯利亚板块在中生代时期对华北地台造成的影响。Many granotoid-hosted gold deposits are distributed in eastern part of North China Platform. They can be divided into synintrusive body and postintrusive body types. The former occurs in the border area of Hebei and Liaoning provinces with near formative time (mainly during Middle Jurassic period)of magmatic body and gold mineralization. The latter mainly appears in Liaoning and Shandong Provinces with older age of magmatic body (mainly during Jurassic period) and with younger time (minly during Cretaceous period)of mineralization. The time differences are larger than 20～120 Ma. Gold mineralization getting younger southeast-eastern wards shows that subduction of Pasific Plate under Asia Plate played an important role in tectonic-magmatic activition of North China Platform and formation of related gold deposits. Part of mineralization getting younger northwards indicates the influence of collison of Siberia Plate with Asia Plate on the formation of gold deposits in the area.

关 键 词：花岗岩溶矿型金矿床 成矿时代 同侵入岩型 后侵入岩型 时空演化 成岩时代 成矿作用 

分 类 号：P618.51[天文地球—矿床学]