矿床地球化学预测方法——以甘肃省地球化学块体为例  

Geochemical prognosis method of mineral deposits:A case study of the geochem ical block in Gansu

作　　者：李通国[1] 李文胜[2] 刘建宏[2] 赵彦庆[2] 白云来[2] 

机构地区：[1]中国地质大学,湖北武汉430074 [2]甘肃省地质调查院,甘肃兰州730000

出　　处：《中国地质》2003年第2期192-198,共7页Geology in China

基　　金：国土资源部地质大调查项目(20012010089)

摘　　要：笔者应用地球化学块体理论,对全省化探数据进行综合分析处理。圈出14种元素地球化学块体173个,其中地球化学巨省25个,地球化学省148个。总结地球化学块体在空间上的分布规律。通过研究地球化学块体内部结构,追踪大型至特大型矿床可能存在的地点。利用块体内已探明的金属储量,计算其成矿率,预测其他元素或其他地段的金属资源总量,圈定成矿远景区,确定巨型矿床找矿靶区7处。通过不同级别地球化学块体与成矿区带的关系研究,对重要地球化学块体、子块体与成矿亚带、矿田进行对比,对地球化学块体内区域矿产资源潜力作出评价。The geochemical block theory has been applied to analysis and processing o f geochemical prospecting data from the whole province of Gansu,and a total of17 3geochemical blocks of14elements has been outlined,including25geochemical megapr ovinces and148geochemical provinces.The authors have summarized the spa-tial distribution characteristics of geochemical blocks and traced the possi ble localities of occurrence of large to su-perlarge deposits through a study of the internal structure of the geochemic al blocks.By using the metal reserves identified inside the blocks they have cal culated the ore potentiality,predicted the metal resources of other ele-ments or other areas,delineated ore prospect areas and determined seven ore targets of giant deposits.Based on a study of the relations between different ra nks of geochemical blocks and the metallogenic regions and belts,im-portant geochemical blocks and sub-blocks,metallogenic sub-belts and ore fie lds have been correlated and the potentials of regional mineral resources inside the geochemical blocks have been evaluated.

关 键 词：矿床地球化学预测方法 甘肃 地球化学块体理论 元素地球化学 分布规律 找矿靶区 成矿远景 

分 类 号：P618.2[天文地球—矿床学]