秦祁昆造山带重要成矿事件与构造响应  

Important metallogenic events and tectonic response of Qinling,Qilian and Kunlun orogenic belts

作　　者：李文渊[1] 张照伟[1,2] 高永宝[1,2] 谭文娟[1] 姜寒冰[1] 郭周平[1] 

机构地区：[1]中国地质调查局西安地质调查中心,陕西西安710054 [2]长安大学,陕西西安710054

出　　处：《中国地质》2011年第5期1135-1149,共15页Geology in China

基　　金：国家科技支撑重点项目课题(2006BAB01A01和2006BAB01B08);国家自然科学基金(40772062);中国地质调查局地质大调查项目(1212010620507;1212011121088;1212011121092;1212010911032;1212011120483)资助

摘　　要：古亚洲构造域和特提斯构造域叠加作用的秦祁昆造山带,在中国显生宙大陆壳形成中起着重要作用。其构造演化复杂,成矿作用多样,古生代及中、新生代为重要成矿时期,并伴有元古宙的重要成矿事件。通过秦祁昆造山带成矿事件的研究,将成矿事件与所处的构造位置紧密联系,发现重要成矿事件均对应特殊的构造响应。其中,西昆仑古元古代塔什库尔干磁铁矿,是一个重要的成"铁"事件;阿尔金与东昆仑构造带交汇的祁漫塔格矿集区是一个重要的构造结,新发现的重要矿产是构造转换、多期次构造作用的产物;祁连山北邻龙首山中产出的金川巨型岩浆铜镍矿床,是元古宙大规模幔源物质上涌的岩浆事件;马元铅锌矿是比较典型的MVT型矿床类型,与秦岭的构造演化历程相一致。Qinling,Qilian and Kunlun orogenic belts were formed by the superimposition of Paleo-Asian and Tethys structural domains,which had played an important role in the formation of China＇s continent during Phanerozoic.The tectonic evolution is complex,and mineralization has diverse characteristics.The significant metallogenic periods are Paleozoic,Mesozoic and Cenozoic,with the important ore-forming events occurring in Proterozoic.Based on studies of the ore-forming events of Qinling,Qilian and Kunlun orogenic belts in relation to their structural environments,the authors have found that the main metallogenic events correspond to specific structural responses.Accordingly,the paleo-Proterozoic Bulunkou magnetite deposit in West Kunlun might have been an important iron formation event.The Qimantage ore concentrated area located along the convergence zone between Altun and East Kunlun tectonic belts is a main tectonic syntaxis.Newly discovered ore deposits were produced by the structure transition and multi-stage functions.The Jinchuan giant Ni-Cu deposit in the Longshoushan Mountain adjacent to the Northern Qilian Mountain is a product of magma upwelling of mantle-derived material in Proterozoic.The Mayuan Pb-Zn deposit is a relatively typical MVT deposit consistent with the structural evolution of the Qinling orogenic belt.

关 键 词：秦祁昆造山带 构造演化 构造结 成矿事件 构造响应 

分 类 号：P612[天文地球—矿床学]