Analysis of Magnetotelluric and Gravity Anomaly Datasets in the Bakony-Balaton Highland Volcanic Field

The Bakony-Balaton Highland Volcanic Field (BBHVF) is one of the most geodynamically complex regions within the Pannonian Basin. Based on legacy telluric and magnetotelluric surveys, it has been hypothesized that regions of high electrical conductivity dominate at crustal depths beneath this Neogene volcanic field. Several theories have been proposed to explain their existence, ranging from the localized presence of highly conductive graphite to the role of deep fluid upwelling. The objective of this study is to analyze newly available long-period magnetotelluric datasets using 2D and 3D inversion techniques and to model the Bouguer gravity anomalies of the area by 3D forward density modeling method. Furthermore, we analyze the information directly derivable from MT response functions to draw fundamental geological and petrophysical conclusions. This investigation aims to fill a gap by reviewing earlier geophysical interpretations that are still debated. The goal is to see which geological explanation is more likely, the presence of a specific solid component with high conductivity or the flow of deep fluids linked to the Neogene volcanic field.