铜陵-安庆地区若干热液矿床成矿流体研究  

STUDIES ON THE FLUID FEATURES OF VARIOUS TYPES OF HYDROTHERMAL DEPOSITS IN TONGLING-ANQING REGION, ANHUI PROVINCE

作　　者：肖新建[1] 倪培[2] 顾连兴[2] 李子颖[1] 

机构地区：[1]核工业北京地质研究院,北京100029 [2]南京大学地球科学系成矿作用国家重点实验室,江苏南京210093

出　　处：《地质找矿论丛》2003年第3期155-162,共8页Contributions to Geology and Mineral Resources Research

基　　金：国家自然科学基金项目(49733120)资助。

摘　　要：　文章在研究铜陵狮子山燕山期岩浆热液叠加矿床成矿流体的基础上,对比铜陵-安庆地区燕山期其他类型矿床的成矿流体,系统探讨了该区燕山期热液矿床成矿流体体系,从夕卡岩型、斑岩型、高温热液型至低温脉型矿床成矿流体的演化规律。认为成矿流体温度、盐度逐渐降低,流体来源从单纯的岩浆来源变为岩浆与雨水的混合来源,成矿流体沸腾作用随之减弱。这些典型矿床基本代表了铜陵-安庆地区燕山期热液成矿体系。There are lots of Mesozoic hydrothermal coppergold deposits in TonglingAnqing region, Anhui province. Coppergold deposits studied in this paper include those at Shizishan, Shaxi, Yueshan, and Xiaomiaoshan. A systematic change has been discovered in fluid features of various types of hydrothermal coppergold deposits in this region. From the Cryptoexplosivebrecciatype at Shizishan, through the phorphyrytype at Shaxi and the hightemperature veintype at Yueshan to the middlelower temperature veintype at Xiaomiaoshan, fluids decrease in salinitiy and temperature, and the source of fluids evolves from simply magmatic to mixed magmatic and meteoric. Contribution of fluid boiling to ore formation also decreases in this district. Such discoveries is very beneficial to further theory studies and prospecting in this district. 

关 键 词：铜陵-安庆 燕山期 热液矿床 成矿流体体系 演化规律 沸腾作用 安徽省 

分 类 号：P594.1[天文地球—地球化学] P618.4[天文地球—地质学]