Figures index

From

Design of Geological Sketch Map in a Forested Area Using the Advanced Optical Remote Sensing Techniques and the Petrography: Kambele and Surroundings Example (Batouri Gold District, Eastern Cameroon)

Bissegue Jean Claude, Ravindra Nath Tiwari, Namit Kumar Jha, Tchameni Rigobert

Journal of Geosciences and Geomatics. 2024, 12(3), 55-61 doi:10.12691/jgg-12-3-1
  • Figure 1. Location map of the study area edited from Google Earth aerial photography
  • Figure 2. Old geological sketch map of study area after Gazel and Gérard (1954)
  • Figure 3. Images (satellite data) used in this study. a) Multispectral image of Landsat 8/9 OLI. b) Gray level image of SRTM dem data
  • Figure 4. Image processing flow based on Object-Oriented Image Analysis Classification
  • Figure 5. Major fractures digitized on filtered SRTM-DEM topographic background
  • Figure 6. The result of segmentation using different similarity tolerance (10, 150)
  • Figure 7. NDVI map of the study area showing two classes of objects
  • Figure 8. Supervised classification by OOC method of the Landsat 8/9 OLI image of the study area
  • Figure 9. Main Rock samples and equivalent thin sections of study area. AA’) Sample and thin section of granodiorite. BB’) Sample and thin section of alkaline granite. CC’) Sample and thin section of Mylonite
  • Figure 10. Validation of contours by comparing the classes of the OOC map versus petrographic observation points in the field
  • Figure 11. Geological Sketch Map of kambele and surroundings designed from OOC