CAJ | 학술논문

针对分布于豫西南栾川地区的脉状铅锌矿床,进行铅锌矿、地层和岩浆岩的铅同位素数据对比分析研究显示:该区铅锌矿床的铅同位素组成(赤土店矿床206Pb/204Pb=17.005～17.953,207Pb/204Pb=15.414～15.587,208Pb/204Pb=37.948～39.036;冷水北沟矿床206pb/204Pb=17.60217.954,207Pb/204Pb=15.458～15.606,208Pb/204Pb=38.20838.772;百炉沟矿床206Pb/204Pb=17.552～18.426,207Pb/204Pb=15.451～15.5794,208pb/204Pb=38.264～39.637)与区内燕山期斑岩和地层的铅同位素组成(燕山期斑岩206pb/204Pb=17.189～17.894,207Pb/204Pb=15.381～15.569,208Pb/204Pb=37.655～39.01;元古界岩石206Pb/204Pb=17.694～19.249,207Pb/204Pb=15.467～15.585,208pb/204Pb=38.303～41.104)有一定的相似和差别.铅同位素特征值(μ值、ω值)、△β-△γ、206Pb/204Pb-207Pb/204Pb、△α-△β-△γ等分析研究,揭示铅锌矿床铅与燕山期斑岩和地层铅的来源关系,综合研究,认为栾川地区脉状铅锌床为与燕山中期斑岩侵入有关的岩浆热液充填-交代型矿床,成矿物质存在燕山期岩浆和围岩地层两种来源.
침대분포우예서남란천지구적맥상연자광상,진행연자광、지층화암장암적연동위소수거대비분석연구현시:해구연자광상적연동위소조성(적토점광상206Pb/204Pb=17.005～17.953,207Pb/204Pb=15.414～15.587,208Pb/204Pb=37.948～39.036;랭수북구광상206pb/204Pb=17.60217.954,207Pb/204Pb=15.458～15.606,208Pb/204Pb=38.20838.772;백로구광상206Pb/204Pb=17.552～18.426,207Pb/204Pb=15.451～15.5794,208pb/204Pb=38.264～39.637)여구내연산기반암화지층적연동위소조성(연산기반암206pb/204Pb=17.189～17.894,207Pb/204Pb=15.381～15.569,208Pb/204Pb=37.655～39.01;원고계암석206Pb/204Pb=17.694～19.249,207Pb/204Pb=15.467～15.585,208pb/204Pb=38.303～41.104)유일정적상사화차별.연동위소특정치(μ치、ω치)、△β-△γ、206Pb/204Pb-207Pb/204Pb、△α-△β-△γ등분석연구,게시연자광상연여연산기반암화지층연적래원관계,종합연구,인위란천지구맥상연자상위여연산중기반암침입유관적암장열액충전-교대형광상,성광물질존재연산기암장화위암지층량충래원.