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Construction and Application of Remote Sensing Ore-prospecting Model for Diamonds in Mengyin Area of Shandong, China(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2024年第02期
Page:
240-251
Research Field:
基础地质与矿床地质
Publishing date:

Info

Title:
Construction and Application of Remote Sensing Ore-prospecting Model for Diamonds in Mengyin Area of Shandong, China
Author(s):
CHU Zhi-yuan1; 2;  WEN Dian-gang1; 2;  LYU Qing1; 2; GENG Xin-xia3*;  YAO Fo-jun3;  YANG Jian-min3
(1. The 7th Institute of Geology & Mineral Exploration of Shandong Province, Linyi 276006, Shandong, China; 2. Key Laboratory of Diamond Mineralization Mechanism and Exploration, Shandong Provincial Bureau of Geology & Mineral Resources, Linyi 276006, Shandong, China; 3. MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of MineralResources,Chinese Academy of GeologicalSciences, Beijing 100037, China)
Keywords:
remote sensingore-prospecting;  diamond;  kimberlite;  ore-prospecting model;  metallogenic prediction;  Shandong
PACS:
P627
DOI:
10.19814/j.jese.2023.09047
Abstract:
With the diversification of remote sensing sensors and the improvement of remote sensing data processing, the in-situ, fast, and effective characteristics of remote sensing technology make it an important technical means for mineral exploration.Remote sensing ore-prospecting model is used to construct the prospecting information and geological prospecting by remote sensing data, which is widely used in mineral resources exploration, but seldom applied in diamond deposits. Diamond depositof Xiyu kimberlite beltin Mengyin areaofShandong, was taken as a case study, and the samples ofkimberlite body(vein)in Hongqiminning areawere tested by short-wave infrared spectroscopy, the composition and spectral characteristics of altered minerals were analyzed.The results show thatthere are absorption valley at the wavelength 1 391, 1 912, 2 318 and 2 393 nminHongqimining area. The principal component analysis(PCA)is used to extract alteration information from ASTER remote sensing data, according tothecharacteristics of alteration minerals.So theabnormal information of magnesium hydroxyl, aluminum hydroxyl and iron staining from ASTERremote sensingdatais extracted. The structure, lithology and water system are interpreted by using PALSAR radar remote sensing data and WorldView-2 high-resolution remote sensing data. Kimberlite is distributed at the intersection of northeast and northwest structures. False alteration remote sensing anomalies caused by erosion and sedimentation through water system could be excluded. Boundaries of lithological differences could be tighten through remote sensing lithological enhancement. By the comprehensive analysis of alteration information, structures, regional geology, geochemical and heavy sand anomaly, etc., the ore-prospecting model is constructed and six exploration targets are figured out, which providea basis for diamond prospecting and mineral resources evaluation.

References:

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