Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 16. 1993. (Budapest, 1993)

parts of the basin. For example, it could be demonstrated that alkali basalts of the central regions are dominated by a lithospheric melt component, whereas, alkali basalts in some marginal basins are asthenospheric in their character (EmbeyIsztin et al. 1993). LOCALITIES It follows from the preceding paragraph that grouping of basalt analyses by volcanic regions of the Pannonian area may prove profitable for further work. Seven different young alkali basaltic volcanic regions can be distinguished in the Pannonian Basin: Graz Basin, Burgenland, Little Hungarian Plain, Balaton region, Nógrád and adjacent regions, Bánát region and Persányi Mts. in the Transylvanian Basin (Fig. 1). Volcanic areas of the Graz Basin, Burgenland, Kisalföld (Little Hungarian Plain) and Balaton region are situated west from the Danube and hence belong to the Transdanubian Volcanic Region (TVR) as defined by Embey-Isztin et al., 1990) opposing the use of the former term of "Styrian Volcanic Arc" (e.g. Heritsch 1967). Fig. 1. Geological sketch map of the Pannonian Basin showing the main young alkali basaltic regions