CAJ | 학술논문

本文对大宝山钼钨多金属矿床中不同类型矿石中黄铁矿及石英矿物用Rb-Sr等时线法进行了精细测定，分别获得层纹状矿石中黄铁矿的年龄为168±5Ma（95％可信度），辉钼矿石英脉中石英矿物年龄为164＋3Ma（95％可信度）和黄铁矿石英脉中石英矿物年龄为162±4Ma（95％可信度），测定结果表明，大宝山铝钨多金属矿床铜铅锌和钼钨成矿阶段形成的时间在168～162Ma之间。本研究所获得的结果也与前人所获得的层状铜铅锌矿石和脉状矿石中辉钼矿的Re-Os模式年龄为165＋1Ma一致。鉴于铜铅锌和钼钨矿床在形成时间和空间上与次英安斑岩和花岗闪长斑岩具有明显的耦合关系，据此表明，其成矿作用主要与区内燕山早期岩浆活动有关。
본문대대보산목오다금속광상중불동류형광석중황철광급석영광물용Rb-Sr등시선법진행료정세측정，분별획득층문상광석중황철광적년령위168±5Ma（95％가신도），휘목광석영맥중석영광물년령위164＋3Ma（95％가신도）화황철광석영맥중석영광물년령위162±4Ma（95％가신도），측정결과표명，대보산려오다금속광상동연자화목오성광계단형성적시간재168～162Ma지간。본연구소획득적결과야여전인소획득적층상동연자광석화맥상광석중휘목광적Re-Os모식년령위165＋1Ma일치。감우동연자화목오광상재형성시간화공간상여차영안반암화화강섬장반암구유명현적우합관계，거차표명，기성광작용주요여구내연산조기암장활동유관。
Through the precise dating measuring of the pyrite and quartz minerals in different types of Mo-W polymetallic deposits in Dabao mountain, northern Guangdong province with Rb-Sr isochron method, the age of the pyrite in laminated ores is yielded 168±5Ma (95% reliability), the age of quartz minerals in quartz-molybdenite veins is yielded 164±3 Ma (95% reliability), and the age of quartz minerals in pyrite- quartz lodes is yielded 162±4 Ma (95% reliability) respectively. The results showed that the Cu-Pb-Zn ores and the Mo-W minerals of Dabao polymetallic deposit were formed at 168 - 162 Ma. The results also agreed with former studies that the pyrrhotite minerals formation time was between 165±1 Ma by Re-Os dating method. In consideration of the obviously coupled relationships of the formation time and space between the Cu-Pb-Zn and Mo-W minerals and the secondary dacite and granodiorite porphyry, it showed that the min- eralization of the deposit was related to the early magmatic activities of Yanshan movement in these areas.