地质与勘探2024，Vol.60Issue(3)：505-514,10.DOI:10.12134/j.dzykt.2024.03.006
奇异性理论在弱异常信息提取中的应用——以冀北隐伏中-酸性侵入岩体为例
Application of Singularity Theory in the Extraction of Weak Anomalies:A Case Study of Hidden Intermediate-Acidic Intrusive Rocks in Northern Hebei
摘要
Abstract
The northern Hebei Province is one of the important concentration areas of mineral resources in Hebei Province,with superior ore-forming conditions.The intermediate-acidic intrusive rocks in north Hebei are closely related to the mineralization of silver-lead-zinc polymetallic deposits.However,a large amount of Quaternary cover suppresses some deep and hidden weak anomaly mineralization information,making conventional geochemical methods have weak extraction effects in this coverage area.This work conducted singularity analysis and principal component analysis to analyze and process the geochemical data of major elements in the 1:200000 water system sediments in northern Hebei,extracted weak anomalies of ore-forming elements in the area,and compared them with the results without singularity treatment.Based on the regional geological background and geophysical and geochemical exploration data,we delineated the abnormal areas related to intermediate-acidic intrusive rock masses in the coverage area,analyzed and discussed the mineralization process and ore-forming laws in order to reveal the enrichment laws of elements in the area.The results show that the above combination method can effectively extract weak element anomalies and delineate favorable mineralization areas,and the delineated positions are consistent with the known rock mass positions and regional structural conditions.A total of seven hidden anomaly points have been delineated,which are infered to be ore-forming prospects.关键词
隐伏岩体/奇异性分析/主成分分析/弱异常提取/异常圈定/中-酸性侵入岩体/冀北地区Key words
hidden rock mass/singularity analysis/principal component analysis/weak anomaly extraction/anomaly delineation/intermediate-acidic intrusive rocks/northern Hebei Province分类
天文与地球科学引用本文复制引用
张盼盼,李随民..奇异性理论在弱异常信息提取中的应用——以冀北隐伏中-酸性侵入岩体为例[J].地质与勘探,2024,60(3):505-514,10.基金项目
河北省自然资源厅项目(编号:13000023P00F2D410354M)资助. （编号:13000023P00F2D410354M）
