中国地质调查2025，Vol.12Issue(6)：41-48,8.DOI:10.19388/j.zgdzdc.2024.376
基于MRAS证据权重法的红旗岭—漂河川地区金成矿预测
Metallogenic prediction of gold deposits in Hongqiling-Piaohechuan area based on MRAS evidence weight method
摘要
Abstract
Hongqiling-Piaohechuan area is located in the southern margin of the eastern Xingmeng orogenic belt.The metallogenic geological condition in this area is profitable and the mineral resources are abundant.The metal-logenic regularity of gold deposits was summarized and the prospecting model was established on the basis of couecting and sorting out regional geological data.A total of 13 evidentiary factors were extracted and constructed,including metamorphic rock series,intermediate-acidic intrusive rocks,1.5 km buffer zone around the faults,large scale positive magnetic fields,and geochemical anomalies(Ag,As,Au,etc.)in stream sediments.A grid cell of 0.75 km ×0.75 km was used to conduct mineral prospect prediction on the basis of MRAS evidence weight method.A A-level mineral prospecting potential area,five B-level mineal prospecting potential areas and a C-level mineral prospecting potential area were delineated after the process of the prior probability calculation,weight value statistical analysis,independence test and the posterior probability calculation of the evidence fac-tors.It was considered that the geological conditions of Shelinggou-Hanshang gold prospecting area were well,which had good prospecting potential,and was the key area for magmatic hydrothermal type gold deposits.The re-search achievements could provide references for gold deposits exploration within the region.关键词
MRAS/证据权重法/金矿/成矿预测/红旗岭—漂河川地区Key words
MRAS/evidence weight method/gold deposit/metallogenic prediction/Hongqiling-Piaohechuan area分类
天文与地球科学引用本文复制引用
张龙,杨仲杰,常亮,刘长存,任传涛,王珑凯,牛茗,朱荣利..基于MRAS证据权重法的红旗岭—漂河川地区金成矿预测[J].中国地质调查,2025,12(6):41-48,8.基金项目
中国地质调查局"吉黑东部地区金矿资源潜力动态评价(编号:DD20230373)"项目资助. （编号:DD20230373）
