Upper Cretaceous magmatism in South Eastern Europe: its extension and nature inferred from outcrop, geophysical and borehole data

Between the northern end of Apuseni Mountains and the Black Sea coast, a discontinuous belt of Upper Cretaceous basins and thousands of coeval intrusions outcrop in Romania, Serbia and Bulgaria, in an area 1500 km long and up to 70 km in width. The real distribution of the Upper Cretaceous magmatites can, however, only be inferred in Western Romania below Tertiary deposits using geophysical and borehole data.