“…The southern boundary of the Transdanubian Superunit is formed by the Balaton Line, the northern branch of the complex Mid-Hungarian Fault Zone (e.g., Csontos & Nagymarosy, 1998), which is a major wrench zone that juxtaposes the IWC against the Tisia terrane (Figure 1; e.g., Császár et al, 2013;Haas et al, 1995;Haas & Péró, 2004;Kovács, 1992). According to borehole data, the broad Mid-Hungarian Fault Zone is composed of various dismembered units of the Austroalpine, Southalpine, or Dinaric provenance, including ophiolite complexes of the Sava Belt (Schmid et al, 2008), as well as Oligocene granitoid intrusions that are correlative to the intrusions along the Periadriatic Line separating the Western and Eastern Alps from the Southern Alps (Haas et al, 2000).…”