铜陵矿集区蚀变-流体填图与成矿流体系统  

Alteration-Fluid Mapping and Metallogenic Fluid System of Tongling Ore Concentration Area

作　　者：蒙义峰[1] 侯增谦[1] 杨竹森[1] 曾普胜[1] 徐文艺[1] 田世洪[1] 李红阳[2] 王训成[3] 姜章平[3] 姚孝德[3] 

机构地区：[1]中国地质科学院矿产资源研究所,北京100037 [2]石家庄经济学院资源环境与工程系,河北石家庄050031 [3]安徽省地勘局三二一地质队,安徽铜陵244033

出　　处：《矿床地质》2004年第3期261-270,共10页Mineral Deposits

基　　金：国家地质调查局地质调查项目 (2 0 0 110 0 0 0 0 0 4);国土资源部科技司专项研究计划 (B0 0 0 2_3 )联合资助

摘　　要：为了详细刻画和深刻理解区域流体系统 ,文章在传统的地质填图方法基础上 ,针对流体活动性状及其地质记录 ,提出了一套区域蚀变_流体填图方法程序 ,并在铜陵地区进行了示范性研究 ,取得了良好效果。这套“蚀变_流体填图”的方法明确了流体填图的填图对象 ,填图单位划分理论依据———流体同源性理论 ,制定了流体系统_流体子系统_流体单元三级填图单元划分方案。在铜陵地区建立了与成矿流体有关的 4套流体系统 ,即海西期喷流沉积流体系统、燕山期岩浆流体系统、燕山晚期中低温流体系统和燕山晚期繁昌火山流体系统 ,并划分出 7个流体子系统和 18个流体单元。通过“蚀变_流体填图”掌握了铜陵矿集区成矿流体的空间分布规律 ,阐述了不同流体系统的成矿特征。In order to describe in detail and understand comprehensively regional fluid systems, the authors, in accord with fluid activities and their geological records and on the basis of the traditional geological mapping method, have advanced a set of procedures for large_scale alteration_fluid mapping. A tentative study in Tongling area has achieved good results: the mapping objects are determined, the theoretical basis (isogenetic evolution of fluid activity) for the division of units in alteration_fluid mapping is established, and the scheme of three_grade mapping unit systems, i.e., fluid system_daughter fluid system_fluid unit, is worked out. Four fluid systems related to ore_forming fluids in Tongling ore concentration area is established, namely, Hercynian exhalation_sedimentary fluid system, Yanshanian igneous fluid system, Late Yanshanian low_to_moderate temperature (epithermal) fluid system and Late Yanshanian volcanic fluid system. In addition, seven daughter fluid systems and eighteen fluid units are determined. Through alteration_fluid mapping, the spatial_temporal distribution of ore_forming fluids in the study area can be understood, the temporal series and framework of the fluid system can be established, and the ore_forming features of different fluid systems can be explained.

关 键 词：地质学 蚀变-流体填图 流体系统 空间展布 成矿特征 铜陵矿集区 

分 类 号：P612[天文地球—矿床学]