Fig. 7
From: The fault systems that control the occurrences of iron ore deposits in northeastern Aswan, Egypt
Allocation of iron oxides using band ratios. (a) BR 4/6 and (b) BR 6/4 in grey of Landsat-8 OLI highlighted the iron oxides as bright and dark pixels, respectively; ASTER BRs (c) 1/2 and (d) 2/1 in grey displayed the iron oxides as dark and bright pixels, respectively; (e) Landsat-8 BR 5/7 5/4 4/2 in RGB marked the iron minerals as pink patches. (These images (Landsat 8 and ASTER) were downloaded through USGS. These figures were created and processed by ENVI v. 5.6.2. software: https://www.l3harrisgeospatial.com/Software-Technology/ENVI), which is mainly utilized for image processing, and 3-ArcGIS Desktop 10.8. (https://www.esri.com/en-us/arcgis/products/arcgis-desktop/overview/).
