黄金科学技术
黃金科學技術
황금과학기술
GOLD SCIENCE AND TECHNOLOGY
2013年
3期
1-9
,共9页
李洪奎%时文革%李逸凡%李璐邑%韩代成%曹丽丽%刘继梅
李洪奎%時文革%李逸凡%李璐邑%韓代成%曹麗麗%劉繼梅
리홍규%시문혁%리일범%리로읍%한대성%조려려%류계매
热事件%构造环境%成矿作用%成矿时代%胶东地区%山东省
熱事件%構造環境%成礦作用%成礦時代%膠東地區%山東省
열사건%구조배경%성광작용%성광시대%효동지구%산동성
thermal events%tectonic environment%mineralization%mineralization age%Jiaodong region%Shandong Province
在进行胶东金矿成矿地质背景和深部找矿研究的基础上,总结发现山东胶东地区中生代构造演化对区内的构造—岩浆事件、沉积环境和成矿作用起着制约与控制作用,岩浆—沉积—构造—成矿事件与区域构造事件具有相互耦合性。金矿的形成和定位与燕山期造山早期、造山中期和造山晚期3个构造幕紧密相关,分别与玲珑、郭家岭和伟德山岩体的构造—岩浆热事件相耦合。通过统计胶东已报道的318件金矿成矿年龄样品,划分了105~81 Ma、130~110 Ma 和160~141 Ma 共3个成矿年龄集中区间,按照成矿作用和构造—岩浆热事件的耦合关系,分为挤压环境下的金钼矿成矿作用、挤压—伸展环境的金银矿成矿作用和后造山环境的金—多金属矿成矿作用。胶东地区金矿成矿时代的峰期成矿年龄集中在120 Ma 左右,世界级三山岛、焦家金矿田的成矿地质环境具有独特性和不可复制性。
在進行膠東金礦成礦地質揹景和深部找礦研究的基礎上,總結髮現山東膠東地區中生代構造縯化對區內的構造—巖漿事件、沉積環境和成礦作用起著製約與控製作用,巖漿—沉積—構造—成礦事件與區域構造事件具有相互耦閤性。金礦的形成和定位與燕山期造山早期、造山中期和造山晚期3箇構造幕緊密相關,分彆與玲瓏、郭傢嶺和偉德山巖體的構造—巖漿熱事件相耦閤。通過統計膠東已報道的318件金礦成礦年齡樣品,劃分瞭105~81 Ma、130~110 Ma 和160~141 Ma 共3箇成礦年齡集中區間,按照成礦作用和構造—巖漿熱事件的耦閤關繫,分為擠壓環境下的金鉬礦成礦作用、擠壓—伸展環境的金銀礦成礦作用和後造山環境的金—多金屬礦成礦作用。膠東地區金礦成礦時代的峰期成礦年齡集中在120 Ma 左右,世界級三山島、焦傢金礦田的成礦地質環境具有獨特性和不可複製性。
재진행효동금광성광지질배경화심부조광연구적기출상,총결발현산동효동지구중생대구조연화대구내적구조—암장사건、침적배경화성광작용기착제약여공제작용,암장—침적—구조—성광사건여구역구조사건구유상호우합성。금광적형성화정위여연산기조산조기、조산중기화조산만기3개구조막긴밀상관,분별여령롱、곽가령화위덕산암체적구조—암장열사건상우합。통과통계효동이보도적318건금광성광년령양품,화분료105~81 Ma、130~110 Ma 화160~141 Ma 공3개성광년령집중구간,안조성광작용화구조—암장열사건적우합관계,분위제압배경하적금목광성광작용、제압—신전배경적금은광성광작용화후조산배경적금—다금속광성광작용。효동지구금광성광시대적봉기성광년령집중재120 Ma 좌우,세계급삼산도、초가금광전적성광지질배경구유독특성화불가복제성。
On the basis of studying geological background of gold mineralization and deep prospecting in Jiaodong area,it is summarized and found that Mesozoic tectonic evolution in this region control tectonic-magmatic events, sedimentary environment and mineralization.Magma -deposition -structure -mineralization events have mutual coupling relation with regional tectonic events.Gold mineralization and positioning have close relation with three tectonic episode, they are early Yanshanian period,middle orogenic period and late orogenic period,while have mutual coupling relation with Linglong,Guojialing and Weideshan tectonic -magmatic events.By Statistics, 318 samples of gold mineralization ages in Jiaodong area can be divided into three age concentration range as 105~81 Ma,130~110 Ma and 160~141 Ma.According to mineralization and mutual coupling relation of tectonic-magmatic thermal events,it can be divided into gold molybdenum mineralization under the extrusion environment, gold and silver mineralization under the extensional environment and gold and multi-metal mineralization under the post-orogenic environment.Gold mineralization is concentrated in 120 Ma.Geological environments of Sanshan-dao and Jiaojia gold fields which are world-class are unique and can not be copied.