The geomorphological, lithostratigraphical, paleontological and paleomagnetic data were considered together for the profile of the Gyongyosvisonta open cast lignite mine pit. (DLO).
The mineralogical studies of the Gyongyosvisonta open cast lignite mine allow further subdivisions of its profile. The occurence of crystoballite in the cover deposits indicates that the volcanic rocks in the Matra Mountains supplied the material