摘要
巴彦洪戈尔地区位于蒙古中央地块南侧,构造活动复杂,发育有多期构造岩浆活动。区内发育有与花岗岩类有关金、铜等矿床。金矿床类型有石英脉型和斑岩型、矽卡岩型,主要金和铜矿化与二叠纪磁铁矿系列花岗岩类密切相关,与钛铁矿系列花岗岩类有关的矿化较少。成矿年代学研究显示,金矿床的形成应早于三叠纪,主要发生于石炭纪和二叠纪,形成于微大陆碰撞期构造转换过程中的岩浆活动期间,区内金矿床(点)构成蒙古国最具潜力的金成矿带。
Bayankhongor area is located in southern Central Mongolia.Owing to its complex tectonic movement,Bayankhongor area has developed multi-period tectonic magmatic activities and granitiod-related gold deposits.Gold deposits are of quartz vein type,porphyry type and skarn type.Main gold mineralization is related to Permian magnetite-series granitoids,whereas ilmenite-series granitiod-related mineralization is less seen.Ore-forming chronology shows that gold deposits should have been formed earlier than Triassic,i.e.,they occurred mainly in Carboniferous and Permian,resulting from the magmatic activity during the tectonic conversion process of the micro-continental collision period.These gold deposits constitute a gold ore belt with the best gold potential in Mongolia.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2010年第3期357-364,共8页
Acta Geoscientica Sinica
基金
地质大调查项目(编号:1212010786004)
国家科技支撑课题(编号:2007BAB25B02)联合资助
关键词
金矿
成矿作用
巴彦洪戈尔
蒙古国
gold deposit
ore-forming process
Bayanhongor
Mongolia
