CAJ | 학술논문

中蒙克鲁伦—满洲里成矿带矿产资源丰富，潜力巨大。中国境内满洲里及其南西一线集中产出查干不拉根、哈拉胜格拉陶勒盖铅锌矿和甲乌拉银铅锌矿，蒙古国毗邻地段产出查夫、乌兰铅锌矿，形成中蒙边境铅锌矿矿集区。采集研究区铅锌矿床样品进行地球化学研究及LA-ICP-MS锆石U-Pb年龄测试。结果表明，上述铅锌矿床与成矿相关的火山岩—次火山岩—侵入岩大多属亚碱性系列；微量元素分布模式具有相似性；乌兰铅锌矿具有明显的负Eu异常，其他3个铅锌矿则具较弱的负Eu异常。根据锆石U-Pb测年结果认为，晚侏罗世—早白垩世应代表成矿年龄，成矿带铅锌矿床均为形成于拉伸环境下的次火山热液型铅锌矿。对比分析了位于同一成矿带内的两国铅锌矿，揭示该矿集区铅锌矿的成矿特征及成矿规律，为进一步指导中国境内该矿集区的铅锌矿找矿工作提供理论依据。
중몽극로륜—만주리성광대광산자원봉부，잠력거대。중국경내만주리급기남서일선집중산출사간불랍근、합랍성격랍도륵개연자광화갑오랍은연자광，몽고국비린지단산출사부、오란연자광，형성중몽변경연자광광집구。채집연구구연자광상양품진행지구화학연구급LA-ICP-MS고석U-Pb년령측시。결과표명，상술연자광상여성광상관적화산암—차화산암—침입암대다속아감성계렬；미량원소분포모식구유상사성；오란연자광구유명현적부Eu이상，기타3개연자광칙구교약적부Eu이상。근거고석U-Pb측년결과인위，만주라세—조백성세응대표성광년령，성광대연자광상균위형성우랍신배경하적차화산열액형연자광。대비분석료위우동일성광대내적량국연자광，게시해광집구연자광적성광특정급성광규률，위진일보지도중국경내해광집구적연자광조광공작제공이론의거。
The Herlen-Manzhouli metallogenic belt, which possesses abundant mineral resources, is located along the border area of northeastern China and eastern Mongolia. The lead-zinc ore concentration area ranging from N 48°, E 114° to N 50°, E 117° in the China-Mongolia border area has Chaganbulagen, Halashenggelataolegai lead-zinc deposits and Jiawula silver-lead-zinc deposit in China and Tsav, Ullan lead-zinc deposits in Mongolia. Based on field geological work and research on these deposits, the authors sys?tematically investigated lithgeochemical characteristics and obtained zircon U-Pb ages by means of LA-ICP-MS. According to the results obtained, volcanic rocks-subvolcanic rocks-intrusive rocks related to mineralization mostly belong to sub-alkaline series, with similar distribution models of rare elements;the Ullan lead-zinc deposit has obvious negative anomalies of δEu, whereas other de?posits have relatively weak negative anomalies of δEu; J3-K1 should be the ore-forming epoch, as shown by zircon dating data;lead-zinc deposits in the belt should be defined as subvolcanic hydrothermal lead-zinc deposits formed in an extensional setting in J 3-K1. Making use of these results, the authors made a comparative study and analysis of the above deposits in the same metallogenic belt so as to reveal the metallogenic characteristics and regularity of the area. The results achieved by the authors provide a theoretical basis for lead-zinc ore prospecting in this area.