摘要
通过分析区域地质赋矿规律,并综合多元地学信息,来选择可靠的成矿预测要素,建立成矿预测模型,圈定找矿靶区。成矿预测主要利用ArcSDM中的WofE模块的Area frequency Table功能,计算研究区成矿预测的成功率曲线,从而为成矿后验概率进行分级提供依据。依据成功率曲线,将后验概率分为四级(即一级靶区、二级靶区、三级靶区、四级靶区、背景区),进而进行找矿预测分析。
Metallogenic prediction is to establish metallogenic prediction model on the basis of summarizing regional metallogenic geological conditions and occurrence rules of ore deposits.It delineates metallogenic prospective areas of different levels by integrating geological information,including geophysics,geochemistry,remote sensing and other multi-source information.This metallogenic prediction makes main use of the function of Area Frequency Table of WofE module in ArcSDM to calculate the success rate curve of metallogenic prediction in the study area,so as to provide a basis for classification of metallogenic posteriori probability.According to the success rate curve,the posterior probability is divided into four levels(first-level target area,second-level target area,third-level target area,fourth-level target area and background area).Then,the prospecting prediction analysis is carried out.
作者
徐友松
范海滨
李强
刘倩
张进平
董美川
张龙
郝志文
XU Yousong;FAN Haibin;LI Qiang;LIU Qian;ZHANG Jinping;DONG Meichuan;ZHANG Long;HAO Zhiwen(Shandong Provincial No.4 Institute of Geological and Mineral Survey,Weifang,Shandong 261021,China)
出处
《中国锰业》
2023年第2期54-60,共7页
China Manganese Industry
基金
山东省省级地质勘查基金项目(编号:鲁勘字[2021]16号)。
关键词
胶东隆起
成矿地质条件
成矿要素分析
找矿预测分析
Jiaodong Uplift
Metallogenic geological conditions
Analysis of ore-forming elements
Prospecting prediction analysis
