新疆北山金窝子金矿田断裂构造控矿作用及控矿构造格架  

Control of fault on ore and structural frame in Jinwozi Au ore field in Beishan area,Xinjiang

作　　者：高永伟[1] 张振亮[1] 曹新志[2] 张旺生[3] 

机构地区：[1]中国地质调查局西安地质调查中心,西安710054 [2]中国地质大学(武汉)资源学院,武汉430074 [3]中国地质大学(武汉)地球科学学院,武汉430074

出　　处：《地质找矿论丛》2012年第3期322-327,共6页Contributions to Geology and Mineral Resources Research

基　　金：国土资源部公益性行业科研专项"新疆北部火山-侵入岩型铁铜多金属矿床综合研究"(编号:201211073)资助

摘　　要：金窝子金矿田位于新甘交界的哈密地区,是北山地区最为重要的金矿田之一,其大地构造背景处于哈萨克斯坦—准噶尔板块与塔里木板块交汇部位东北缘的北山裂谷;断裂构造是矿田内最为重要的控矿因素。文章对矿田内主要的控矿断裂构造特征和断裂构造控矿规律特征进行了研究,F210韧脆性剪切断裂带为矿田内的主干断裂,该断裂的逆冲破碎带为210金矿床的直接控矿构造,控制了蚀变岩型金矿化的发育,由逆冲剪切产生的叠瓦式逆断层不含矿,而近SN向缓倾斜构造控制了210金矿床石英脉型矿化的发育;由F210韧脆性剪切断裂逆冲作用在金窝子岩体内形成的近SN向高角度追踪张性断裂控制了金窝子金矿床石英脉型矿体的形态、产状及成矿元素的分布;在对构造控矿作用研究的基础上,建立了矿区的控矿构造格架。Jinwozi gold ore field is located in Hami city at border of Xinjiang Autonomous Region and Gansu province and is one of the most important gold ore fields. Geotectonically it is in the Beishan rift valley at convergency of Kazakhstan- Junggar plate and Tarim plate. Fault is the most important ore-con- trol factor in the ore field. This paper deals with mainly characteristics of ore-control faults and regularirty of fault control on the ore. The brittle shear fault F210 is the main fault in the field and the thrust faulted fragmental zone developed with tensional fractures in the fault hosts gold deposit 210 and controls the al- tered cataclastic rock type gold ore. No ore occur in the thrusting sheared imbrecate faults. The faults trending nearly SN and dipping gentlely control occurrence, morphology and ore element distribution of quartz vein gold ore body of the gold deposit 210. Based on the mentioned above is set up the ore-control structural framework.

关 键 词：金窝子金矿田 断裂构造控矿规律 韧脆性剪切带 控矿构造构架 北山地区 新疆维吾 尔自治区 

分 类 号：P613[天文地球—矿床学] P618.51[天文地球—地质学]