地球
地毬
지구
EARTH
2014年
9期
6-9
,共4页
小兴安岭-张广才岭成矿带%中-新生代岩浆活动%控矿性
小興安嶺-張廣纔嶺成礦帶%中-新生代巖漿活動%控礦性
소흥안령-장엄재령성광대%중-신생대암장활동%공광성
Xiao xing - ZhangGuangCaiLing metallogenic belt%Mesozoic - Cenozoic magmatic activity%Ore control
小兴安岭-张广才岭成矿带,大地构造处在西伯利亚板块与华北-塔里木板块之间的天山-兴蒙复合造山区东段。区内印支晚期-燕山早期岩浆活动以侵入作用为主,多形成巨大的岩基。地质时间处于古亚洲(洋)构造域向滨西太平洋构造域转换时期[1]。花岗岩成因类型主要为重熔型,发育特征的碱性花岗岩[2]。岩浆活动主要受壳断裂、基底断裂控制,对有色多金属成矿的贡献主要是提供了热源[3];本区燕山晚期、喜山期岩浆活动以陆相火山活动为主,多表现为断陷火山盆地沉积。花岗岩成因类型主要为同熔型。大地构造位置属滨西太平洋陆缘活动带。岩浆活动主要受岩石圈断裂、超壳断裂控制,对有色多金属成矿的贡献主要是提供了矿源[4][5]。
小興安嶺-張廣纔嶺成礦帶,大地構造處在西伯利亞闆塊與華北-塔裏木闆塊之間的天山-興矇複閤造山區東段。區內印支晚期-燕山早期巖漿活動以侵入作用為主,多形成巨大的巖基。地質時間處于古亞洲(洋)構造域嚮濱西太平洋構造域轉換時期[1]。花崗巖成因類型主要為重鎔型,髮育特徵的堿性花崗巖[2]。巖漿活動主要受殼斷裂、基底斷裂控製,對有色多金屬成礦的貢獻主要是提供瞭熱源[3];本區燕山晚期、喜山期巖漿活動以陸相火山活動為主,多錶現為斷陷火山盆地沉積。花崗巖成因類型主要為同鎔型。大地構造位置屬濱西太平洋陸緣活動帶。巖漿活動主要受巖石圈斷裂、超殼斷裂控製,對有色多金屬成礦的貢獻主要是提供瞭礦源[4][5]。
소흥안령-장엄재령성광대,대지구조처재서백리아판괴여화북-탑리목판괴지간적천산-흥몽복합조산구동단。구내인지만기-연산조기암장활동이침입작용위주,다형성거대적암기。지질시간처우고아주(양)구조역향빈서태평양구조역전환시기[1]。화강암성인류형주요위중용형,발육특정적감성화강암[2]。암장활동주요수각단렬、기저단렬공제,대유색다금속성광적공헌주요시제공료열원[3];본구연산만기、희산기암장활동이륙상화산활동위주,다표현위단함화산분지침적。화강암성인류형주요위동용형。대지구조위치속빈서태평양륙연활동대。암장활동주요수암석권단렬、초각단렬공제,대유색다금속성광적공헌주요시제공료광원[4][5]。
Xiao xing - ZhangGuangCaiLing metallogenic belt, is at the eastern region of tianshan - xingmontmorillonite composite made mountains in plate tectonics, between the Siberian plate and north China - tarim plate. Late indosinian to early yanshanian ,mag-matic activity in the area is given priority to with intrusion, and mainly formace a huge batholith. In geological time GuYaZhou (ocean) tecton-ic domain to marina west Pacific tectonic domain transformation period [1]. Genetic types of granite mainly oriented remelted, developmental features of alkaline granite [2]. Magmatic activity is mainly controlled by the shell fracture, basal fracture, contribution to nonferrous metal mineralization more mainly provides the heat source [3]; In late yansha-nian and Himalayan magmatic activity is given priority to with conti-nental volcanic activity, more performance for fault depression basin sedimentary volcano. Granite genetic types are mainly with melting type. Tectonic position belongs to marina west Pacific epicontinental active belt. Magmatic activity is mainly controlled by the lithosphere, super shell breaking, contribution to nonferrous metal mineralization more mainly provides the source [4] [5].