利用图像融合分形-小波模型识别伊朗西北部塔罗姆成矿带的稀土元素异常点

IF 2.6 3区 地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS Chemie Der Erde-Geochemistry Pub Date : 2024-05-01 DOI:10.1016/j.chemer.2024.126093
Mohammad Mahdi Pourgholam , Peyman Afzal , Ahmad Adib , Kambiz Rahbar , Mehran Gholinejad
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引用次数: 0

摘要

本研究旨在利用基于深度学习(FDL)的图像融合技术,探测与铁磷灰石矿相关的 REE 地球化学异常。使用多重样条曲线 B 对地球化学数据中与铁磷灰石成矿有关的元素进行建模。基于二维离散小波变换(DWT)信号分析和浓度-面积(C-A)分形模型的组合,小波数(WN)分形模型分类结果最佳。Sym8 根据从塔罗姆地区(伊朗西北部)采集的溪流沉积物样本,将 DWT 作为 REE 的选定小波模式。此外,还对 DWT 进行了五级小波系数分解。此外,还利用分形-小波模型对 DWT 数据进行了分类,以便从该地区的背景水平中划分出 REE 异常点。叠加集水盆地模型,并利用上下游部分进行加权。因此,突出的 REE 源异常位于研究区域的南部。建议的分形小波建模所获得的结果与实地检查异常样本和从铁铂矿床采集的岩石样本相关联。
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Recognition of REEs anomalies using an image Fusion fractal-wavelet model in Tarom metallogenic zone, NW Iran

This study aims to detect REE geochemical anomalies in relationship to Iron-apatite ores utilizing an image Fusion based on Deep Learning (FDL). The geochemical data was modeled for elements related to Iron-apatite mineralization using multi b Spline B. The results were fusioned in applying the Deep learning method based on pre-trained networks. Wavelet-Number (WN) fractal model classified the best results based on the combination of a two-dimensional Discrete Wavelet Transformation (DWT) signal analysis and a Concentration-Area (C-A) fractal modeling. Sym8 carried the DWT as a selected wavelet pattern for REE based on Stream sediment samples collected from the Tarom region (NW Iran). In addition, the DWT was decomposed by wavelet coefficients at five levels. Furthermore, the DWT data were classified using a fractal-wavelet model to delineate REE anomalies from background levels in this region. Overlayed with the catchment basins model and weighted using the upstream and downstream parts. As a result, the prominent REE source anomalies are located in the southern parts of the study area. The results obtained by the proposed fractal-wavelet modeling are in connection with field check anomaly samples and the rock samples collected from the Iron-Apatite ore deposits.

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来源期刊
Chemie Der Erde-Geochemistry
Chemie Der Erde-Geochemistry 地学-地球化学与地球物理
CiteScore
7.10
自引率
0.00%
发文量
40
审稿时长
3.0 months
期刊介绍: GEOCHEMISTRY was founded as Chemie der Erde 1914 in Jena, and, hence, is one of the oldest journals for geochemistry-related topics. GEOCHEMISTRY (formerly Chemie der Erde / Geochemistry) publishes original research papers, short communications, reviews of selected topics, and high-class invited review articles addressed at broad geosciences audience. Publications dealing with interdisciplinary questions are particularly welcome. Young scientists are especially encouraged to submit their work. Contributions will be published exclusively in English. The journal, through very personalized consultation and its worldwide distribution, offers entry into the world of international scientific communication, and promotes interdisciplinary discussion on chemical problems in a broad spectrum of geosciences. The following topics are covered by the expertise of the members of the editorial board (see below): -cosmochemistry, meteoritics- igneous, metamorphic, and sedimentary petrology- volcanology- low & high temperature geochemistry- experimental - theoretical - field related studies- mineralogy - crystallography- environmental geosciences- archaeometry
期刊最新文献
Editorial Board Contrasting fluids and implications for ore genesis in the Jiawula-Chaganbulagen Porphyry Mo-epithermal PbZn metallogenetic system: Evidence from fluid inclusions and H-O-He-Ar isotopes Ediacaran anorogenic alkaline magmatism and wolframite mineralization linked to mantle plume activity in the north Arabian-Nubian Shield (Egypt) A hydrous sub-arc mantle domain within the northeastern Neo-Tethyan ophiolites: Insights from cumulate hornblendites Hydrothermal alteration of accessory minerals (allanite and titanite) in the late Archean Closepet granitoid (Dharwar Craton, India): A TEM study
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