Figure 4. (a) Na₂O + K₂O - SiO₂ diagram [20], the line dividing the alkaline domain from the calc-alkaline domain is after [29], (b) Diagram A/NK - A/CNK [21] showing the metaluminous to peraluminous nature of the plutonic rocks. (c) and (d) K2O-SiO2 (Peccerillo and Taylor, 1976) and Na2O+K2O-CaO-SiO2 [23] diagrams showing the calc-alkaline to shoshonite nature of the rocks studied. (e) FeO/MgO+FeO - SiO2 diagram [23] showing the magnesian and ferriferous nature of the Pitoa granitoïds

From

Contribution to the Petrogenesis of Pan-Africain Granitoids from East Pitoa in the Northern Cameroon Domain of the Central Africain Fold Belt: Implications for Their Sources and Geological Setting

Cedric Roth Happi Djofna, Merlain Houketchang Bouyo, Daouda Dawai, Rigobert Tchameni, Landry Kouedjou, Martial Periclex Tchunte Fosso, Hervé Brice Fotso Kengne

• Previous
• Figure 4 of 10  (Figures index)
• Next