Neogene-Quaternary alkaline basalts in Central Europe are joined with two types of geotectonic structures: a) rift zones in Hercynian platform, b) hinterland of the Alpine folded system. a) Rift volcanism (Hessian Depression — F.R.G., Lower Silesia — Poland) represents a great variety of alkaline ultrabasic, alkaline basic rocks and their differentiates with higher content of Ti0₂ (2.5%), lower content of Si0₂ and relatively higher value s of F/K, P/Zr, L/La, Ca/Na, Ti/Sc. The ratio Ti/V = 63–74 is characteristic of continental basalts.
b) Volcanism in hinterland of Alpine folded system (Slovakia, Romania, Yugoslavia) is characterized by rather limited petrographic composition with dominancy of basanites and subalkaline olivine basalts, lower content of Ti0₂ (2%), higher content of Si0₂. The ratio Ti/V 50 is close to the oceanic islands. Basalts of Persani Mts. (Romania) with low content of Ti0₂ (1.6%), higher content of Si0₂ (48%) and lower content of incompatible elements show specific character. Comparative analysis reveals different conditions of magma-forming processes controlled by partial melting, crystallization differentiation with eventual contamination of crustal material.