Figures index

From

Lithogenic Concentrations of Useful Elements and Residual Mineralization Indices in the Weathering Products Derived from Mineralized Rocks in Meїganga (Central Cameroon)

Tchaptchet. T.W., Tematio. P., Njiki. C.C., Guimapi. T.N., Hapi. F., Tiomo. I., Tchuenkam. D.B., Momo. N.N.M.

Journal of Geosciences and Geomatics. 2019, 7(3), 112-133 doi:10.12691/jgg-7-3-3
  • Figure 1. Geomorphology and Location map of the Meїganga study area. A. The main lateritic plateaus of Cameroon. B. Cross sections along the Adamaoua plateau. C. Digital elevation model (DEM) of the Meїganga study area. D. Topographic map of the Meїganga study site
  • Figure 2. Geological sketch of the Meїganga study area. A. Thrust belt between São Francisco, Congo and West African Cratons. B. Map of Cameroon showing the Cameroon section of the African shear zone (CSASZ). C. Geological map of the Meїganga study area. D. Synthesizing cross section of geology in the study area
  • Figure 3. Macroscopic organization of the Meїganga Soils profiles. Soils profiles developed on, A. Micaschist; B. Orthogneiss; C. Granite; D. Quartzite veins
  • Figure 4. Minerals detected by XRD and their relative contents in the Meїganga weathered products
  • Figure 5. REEs/CI-Chondrite [35] normalized patterns in the Meїganga weathering profiles. Weathering profiles developed on: A. Micaschist; B. Orthogneiss; C. Granite; D. Quartzite vein
  • Figure 6. The PCA aggregation circles showing the relationship between major, trace and RE elements in the Meїganga weathering products, Weathering mantles developed on, A. Micaschist; B. Orthogneiss; C. Granite; D. Quartzite veins
  • Figure 7A-C
  • Figure 7. Distribution matrix of theoretical errors between measured and calculated useful metals contents using major elements contents in the Meїganga weathering products. Weathering products from, A. Micaschist; B. Orthogneiss; C. Granite; D. Quartzite vein
  • Figure 8. Weathering parameters used in the Meїganga weathering products, 8A. SiO2-Al2O3-Fe2O3, ternary diagrams illustrating the different stages of alteration (after [52]). 8B. Classification of laterites (after [63])