93頁
提要
吉林渾春小西南岔一農坪地區(qū)為延邊東部最東端，金(銅金)
資源是吉林省最具勘查潛力的地區(qū)之一。屬環(huán)太平洋成礦帶的
外帶，即大陸邊緣活動帶。其成礦地球動力學環(huán)境與太平洋板
塊的俯沖相關聯。該區(qū)中生代火山一巖漿活動頻繁，構造情況
復雜，成礦地質條件有利，分布著大大小小的與火山一次火山
巖型有關的金/銅金礦床(礦點)數十處。該區(qū)各單位已作了
大量的地質、遙感、地球物理和勘查地球化學等礦產勘查研究，
但缺乏系統(tǒng)的綜合分析。若應用傳統(tǒng)的資料處理方法，將是一
件非常復雜、繁瑣工作。本文以研制典型礦床地質模型為基礎，
以總結區(qū)域金(銅金)礦床(礦點)的時空重現規(guī)律為前提，
對“地質、地球物理、勘查地球化學及遙感”綜合成礦信息進
行了有力度的二次開發(fā)，利用GIS方法建立了綜合成礦信息找
礦模型，實施金(銅金)勘查靶區(qū)預測。通過研究，共圈出預
測勘查靶區(qū)n處，其中一級預測靶區(qū)6處，二級預測靶區(qū)5處。
總結了GSI應用于中大比例尺礦產勘查靶區(qū)預測的一些方法經
驗，達到了預期的目的。
關鍵詞:GSI找礦模型勘查靶區(qū)預測小西南岔

目錄
第一章區(qū)域地質背景·········............................................
第一節(jié)古生代地層及巖石························，················，
一五道溝群的巖石特征·········································
二、五道溝群巖石化學及微量元素特征·················，
三、區(qū)內二疊系地層巖石特征及含礦性··················
第二節(jié)古生代巖漿巖及特征·····································，
一、古生代巖石類型和基本特征·····························
二、古生代巖石地球化學特征·································
三、古生代花崗巖系的成巖構造環(huán)境······················
第三節(jié)中生代及新生代地層和巖石·························
一、中生代地層及巖石······································，·····
二、中生代巖石······························，························
三、新生代地層和巖石···········································
四、第四系······························································
第四節(jié)構造體系···························································
一、東西向構造體系··········，·····································
二、南北向構造體系···············································
三、新華夏系構造體系······，····································
四、北西向及J匕北西向構造····································
五、北東向構造·······················································
第二章區(qū)域成礦條件··············································..··......
第一節(jié)地層與巖金成礦的關系·································
一、古生界地層與巖金成礦的關系························
二、中、新生界地層與巖金成礦的關系················
第二節(jié)侵入巖與成礦的關系····································
一、古生代、中生代侵入雜巖與成礦的關系········
二、巖漿演化、成因與成礦···································
第三節(jié)構造與成礦的關系········································
一、區(qū)域構造演化··················································
二、基底對成礦的影響··········································
第三章典型礦床地質特征··········································
第一節(jié)小西南岔淺成系脈型銅金礦······················
一、礦體地質···························································
二、礦石物質成分、組構及成礦階段····················
三、圍巖蝕變·······························，···························
四、礦體與脈巖·······················································
五、成礦深度·······································，···················
六、成礦時代···························································
第二節(jié)農坪脈型金銅礦···············..