西藏大冈底斯北部金属矿床成矿系列研究

Greatgangdise Northern Tibet Metallogenic Series Study of Ore Deposits

依据近年西藏自治区矿产资源大调查的资料与西藏自治区矿产资源潜力评价研究获得的系统、详细的矿产资源资料,编写论述了西藏大冈底斯北部(包括班公湖-怒江成矿带、北冈底斯成矿带、中冈底斯成矿带三个成矿带)的矿产地质特征及成矿分布规律与成矿系列。班公湖-怒江成矿带包括燕山早期(洋盆形成时期,如东巧铬矿)及燕山中晚期(陆内俯冲挤压时期,如屋索拉金矿)岩浆作用有关矿床成矿系列和那曲-洛隆盆地与喜马拉雅期流体作用有关(如纳多弄铅矿)矿床成矿系列;北冈底斯成矿带矿床主要分布在申扎—嘉黎一线的北部地区(亦称冈底斯北矿带),包括玉古拉镍矿(燕山早期,岩浆岩型)、舍索铜矿(燕山中晚期,矽卡岩型为主)、尤卡朗-昂张铅矿(燕山中晚期,热液型为主)、俄龙呷砷矿(燕山晚期—喜马拉雅早期,流体-改造型为主)四个地区不同类型矿床成矿系列;中冈底斯成矿带包括近东西向两个成矿亚带,北边为革吉-雄巴-文部成矿亚带燕山中晚期(如尕尔铜金矿)及狮泉河-申扎弧-盆系演化期岩浆热液成矿作用的矿床成矿系列,南边为朗久-塔诺错-纳木错成矿亚带喜马拉雅中晚期(如甲岗钨钼铋矿)岩浆热液成矿作用的矿床成矿系列。

Information based on extensive investigation of mineral resources in recent years, the Tibet autonomous region and the Tibet autonomous regional mineral resources potential evaluation research on the system, detailed mineral resources information, writing discusses the Great gandise northern Tibet, （including the Bangonhu-Nujiang metallogenic belt, the North gandise metallogenic belt and Middle gandise metallogenic belt three metallogenic belts） of mineral geological characteristics and distribution regularity of mineralization and metallogenic series. The Bangonhu-Nujiang metallogenic belt including the early Yanshan （ocean basin forming period, such as Donqiao Cr deposit） and Yanshan period （intracontinental subduction extrusion, such as Wusola Au deposit） magmatism related deposit metallogenic series and the Naqu-Lolung basin related to the Himalayan period fluid effect, such as Naduolong Pb deposit metallogenic series; Ore deposits are mainly distributed in the metallogenic belt of Shenza- Jiali line north （also known as the Gandise north ore belt）, including the Yugula Ni deposit （early Yanshan, the magmatic rock type）, the Shesuo Cu deposit （Yanshan period, mainly skarn type）, Youcalarn-Angzhang Pb deposit （mainly yanshan period, hydrothermal type）, and Elonga As deposit （early and late Yanshanian and Himalayan fluid-type transformation mainly） four areas where different types of ore deposit metallogenic series~ Middle gandise metallogenic belt in the near east-west two metallogenic belt, and the Geiji-Xiongba-Wenbu ore- forming subzone north＇s of Yanshan period （such as Garqong CuAu ore deposit） Shiquanghe-Shengza are-basin evolution stage of magmatic hydrothermal mineralization metallogenic series of ore deposits, the south＇s Langjiu- Tarochuo-Namuchuo ore-forming subzone Himalayan period （such as Jiagang WMoBi deposit） ore deposit metallogenic series of magmatic hydrothermal mineralization.