浙东南地区铅锌(银)矿床稳定同位素特征及成矿物质来源探讨  

THE CHARACTERISTICS OF STABLE ISOTOPES AND THE SOURCES OF ORE-FORMING MATERIALS OF LEAD-ZINC (SILVER) ORE DEPOSITS IN THE SOUTH EST AREA OF ZHEJIANG

作　　者：杨明德[1] 姚金炎[1] 朱桂田[1] 

机构地区：[1]中国有色金属工业总公司矿产地质研究院

出　　处：《矿产与地质》1989年第4期57-63,共7页Mineral Resources and Geology

摘　　要：本文根据浙东南地区两类铅锌(银)矿床的硫、铅及氢氧同位素特征,认为:五部、大岭口等矿床的成矿物质主要来自上地幔及下地壳:在成矿作用早期的成矿热液以岩浆水为主。晚期则主要为大气降水:成矿与中生代陆相火山作用有关。七湾、乌岙、治头岭等矿床的成矿物主要来自陈蔡群变质岩:成矿热液中的介质水,主要为陈蔡群变(?)成矿与加里东期变质作(?)The ore-forming materials of the deposits at Wubu, Dalingkou and others are considerd to be from upper mantle and lower crust on the basis of the isotopie characteristics of sulfur, lead, hydrogen anb oxygen in southeast Zhejiang. The ore-forming hydrothermal fluid was predominated with the magma tic water early in the oreforming processes.and then meteoric water prevailed.Mineralization was associated with subaerial vokanism of Mesozoic age. The ore-forming materials of the deposits of Qiwan, Niaoao, Zhitouling and so on were derived from the metamorphic rocks of Chencai Group. The medium water of ore-forming hydrothermal fluid was predominated with the metamarphic water trapped during the metamorphism period of the primary rocks of Chencai Group. The mineralization was also associated with the metamorphism in Caledonian pericd.

关 键 词：成矿物质来源 矿床分布 陈蔡群 同位素特征 火山作用 浙东南 成矿热液 岩浆水 加里东期 氢氧同位素 

分 类 号：P5[天文地球—地质学]