Multiphase Alkaline Basalts of Central Al-Haruj Al-Abyad of Libya: Petrological and Geochemical Aspects

Figure 2

Classification of CHA basalts on SiO₂ versus Na₂O + K₂O diagram of Le Bas et al. [12] and Zr/TiO₂ versus SiO₂ diagram of Winchester and Floyd [13].

(a)

(b)