Scholarlink

This chapter provides an overview of the remote sensing applications in detecting gold-related alteration zones in the Egyptian Nubian Shield (ENS) rocks. It highlights the usefulness of implementing various types of remotely sensed datasets in identifying these mineralized zones. In the Present study, four different satellite datasets including, hyperspectral Hyperion data, multispectral Landsat-9 and ASTER data, and ALOS PALSAR Digital Elevation Model (DEM) Data, have been integrated to distinguish the potentially mineralized alteration zones at Wadi Sodmein area in the Central ENS. Various mapping techniques were adopted, such as Band Ratio (BR), Constrained Energy Minimization (CEM) and Spectral Angle Mapper (SAM). The results of alteration abundance and lineaments density obtained from the various implemented satellite data were integrated together using Weighted Overlay (WO) model, yielding a mineralization potentiality map showing the relative potentiality for gold mineralization over the studied area. The study revealed highly potential localities for gold mineralization occurrence due to the coincidence of several indicator minerals and high lineaments density over these suggested localities. Besides, these localities also show similar alteration setting to those of the nearby Semna and El Fawakhir-El Sid known mining districts, which exhibit extra high potentiality for the delineated localities. A field study has been conducted for in-situ validation. Several alteration indicators have been observed including, chlorite alteration, iron oxides staining and quartz veins and veinlets. Quartz veins are, in some localities, encountered to be fully extracted for gold, which indicates high feasibility of gold mineralization at the concerned area.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Detecting Gold-Bearing Alteration Zones Using Remote Sensing Data (Hyperion, ASTER and Landsat-9): A Case Study from Sodmein Area, Central Egyptian Nubian Shield

  • 章节

  • 发表日期：

    2025年

查看全文
  • Sobhi M. Ghoneim,
  • Changcheng Wang,
  • Hala F. Ali,
  • Zakaria Hamimi

摘要

This chapter provides an overview of the remote sensing applications in detecting gold-related alteration zones in the Egyptian Nubian Shield (ENS) rocks. It highlights the usefulness of implementing various types of remotely sensed datasets in identifying these mineralized zones. In the Present study, four different satellite datasets including, hyperspectral Hyperion data, multispectral Landsat-9 and ASTER data, and ALOS PALSAR Digital Elevation Model (DEM) Data, have been integrated to distinguish the potentially mineralized alteration zones at Wadi Sodmein area in the Central ENS. Various mapping techniques were adopted, such as Band Ratio (BR), Constrained Energy Minimization (CEM) and Spectral Angle Mapper (SAM). The results of alteration abundance and lineaments density obtained from the various implemented satellite data were integrated together using Weighted Overlay (WO) model, yielding a mineralization potentiality map showing the relative potentiality for gold mineralization over the studied area. The study revealed highly potential localities for gold mineralization occurrence due to the coincidence of several indicator minerals and high lineaments density over these suggested localities. Besides, these localities also show similar alteration setting to those of the nearby Semna and El Fawakhir-El Sid known mining districts, which exhibit extra high potentiality for the delineated localities. A field study has been conducted for in-situ validation. Several alteration indicators have been observed including, chlorite alteration, iron oxides staining and quartz veins and veinlets. Quartz veins are, in some localities, encountered to be fully extracted for gold, which indicates high feasibility of gold mineralization at the concerned area.