Figure 2. Major element geochemical classification plots for granitoid rocks from Bétaré Oya. (a) Na2O + K2O versus SiO2 diagram of [35], showing the subalkaline compositions of the rocks. (b) K2O versus SiO2 diagram of [37], the rocks plot in the high-K field. (c) A/NK versus A/CNK diagram of [38] showing aluminosity and alkalinity. (d) Discrimination diagram of [39], showing that the rocks were formed in a volcanic arc setting. A/NK = molar Al2O3/Na2O+K2O; A/CNK= molar Al2O3/CaO+Na2O+K2O, Syn-COLG, Syn-collisional granitoid; WPG, within-plate granitoid; VAG, volcanic arc granitoid; ORG, oceanic ridge granitoid


New LA-ICP-MS U-Pb Ages, Lu-Hf Systematics and REE Characterization of Zircons from a Granitic Pluton in the Betare Oya Gold District, SE Cameroon

Kevin I. Ateh, Cheo E. Suh, Elisha M. Shemang, A. Vishiti, Enerst Tata, Nelson N. Chombong

Journal of Geosciences and Geomatics. 2017, 5(6), 267-283 doi:10.12691/jgg-5-6-2