基于数字矿床模型的福建永梅地区隐伏矿三维成矿预测  

Three-Dimensional Metallogenic Prediction in Yongmei Region Based on Digital Ore Deposit Model

作　　者：陈建平[1] 王春女[2] 尚北川[1] 史蕊[1] 

机构地区：[1]中国地质大学(北京)国土资源与高新技术研究中心,北京100083 [2]北京市国土资源信息开发研究重点实验室,北京100083

出　　处：《国土资源科技管理》2012年第6期14-20,共7页Scientific and Technological Management of Land and Resources

摘　　要：从福建永梅地区的地质背景入手,结合成矿理论,对该区的找矿地质模型进行系统的梳理及分析,分别从地层、岩浆岩、构造、围岩蚀变4个方面确定了找矿标志,采用计算机建模技术并结合隐伏地质体反演法建立矿田周围地区的数字地质模型,实现研究区域三维可视化;在找矿模型的指导下,选取了成矿有利地层、断裂缓冲、中心对称度、等密度、燕山早期岩浆岩等17个证据因子,并在建立三维数字研究区的基础上,将地球物理信息、地球化学信息加入到地质模型中,以地质背景为依托,充分运用物探、化探的指示作用,对深部隐伏矿进行预测,实现地质、地球物理地球化学结合预测;并应用"立方体预测模型"预测方法,结合地质统计学相关方法,圈定出6个成矿远景区。Proceeding with geological background of Yongmei Region, Fujian Province, and combined with the metallogenic theory, this paper systematically analyzes the prospecting geological model, determining the prospecting marks from the aspects of strata, volcanic rocks, structure, and wall rock alteration, and establish the geological model of the surrounding mineral field using the computer modeling technology combined with concealed geologic body inversion in order to realize the research area three-dimensional visualization. Then guided by prospecting model, the paper selects favorable ore-forming strata, fauh buffer, center symmetrical, fault density, early Yanshanian magmatic rock etc. as evidence factors. On the basis of estahlishing the three dimensional digital research area and relying on geologic setting, it adds geophysical and geochemical information to the geological model and predicts the deep concealed ore by making full use of the geophysical and geochemical exploration indication so as to realize geophysical and geological combination forecast. Finally, using the prediction method of ＂Cube prediction model＂ and combined with geostatistic method, the paper determines six prospective mining areas.

关 键 词：数字矿床模型 成矿预测 三维数字 福建永梅 

分 类 号：P612[天文地球—矿床学]