Lithosphere structure at the contact of the Adriatic microplate and the Pannonian segment based on the gravity modelling

Calibrated densities were applied to other profiles set up in the study area for the purpose of determining the structural relations. The structural units determined on the Alp07 profile (Pannonian crust, Transition zone and Dinaridic crust) can be easily followed on all other profiles. The Transition zone, which separates the Pannonian and the Dinaridic crusts, is very wide and characterised by lateral and vertical changes in velocities and densities. It corresponds with the ophiolite zones in more recent tectonic maps. The Tisia block can be compared with the Pannonian crust, whereas the Dinaridic crust would relate to the structural unites of the Adriatic. However, the NE boundary of the Transition zone is located much further north than the boundary of the Tisia block in published tectonic maps. Due to a marked 2-D structure, the obtained results enabled the development of a 3-D structural map of the Mohorovičić discontinuity. The main fault in the upper mantle, which was defined on the basis of geometrical relations, indicates a subduction of the Adriatic microplate beneath the Pannonian segment in the NE wing of the Dinarides.