The investigated area is located in the southern Ötztal Complex (ÖC), representing the western part of the Ötztal-Bundschuh nappe system, and the Texel Complex (TC), which is part of the Koralpe-Wölz high-pressure nappe system. Both show a complex tectonic and metamorphic evolution.After eo-Alpine orogeny, the current literature (Schmid et al., 2004; Sölva et al., 2005) strictly separates the ÖC and TC by ignoring the earlier postulated “Schlingentektonik” of Schmidegg (1932), which implies that parts of the TC surround the Koralpe-Wölz high-pressure nappe system and occur enclosed within the ÖC.This study deals with this old approach. The transition zone between the ÖC and the Koralpe-Wölz high-pressure nappe system was investigated along a profile, which crosses rocks of the TC embedded in the ÖC. Additionally reference samples from the TC were taken for comparison.Due to the lack of tectonic boundaries in the study area, this thesis is based on petrographic investigations, the geographical distribution of garnet zoning patterns, pseudosections with isopleth-geothermobarometry and monazite age dating. By using these methods it is shown, that the ÖC is more heterogeneously evolved as described in the current literature. Therefore the investigated area could be separated into three units. The unit which is assumed as part of the “Schlingentektonik” of the TC (referred to former literature) shows lithological similarities and comparable garnet zoning patterns like reference samples from the TC. Moreover Permian monazite ages from this area support the assumption that parts of the TC are enclosed in the ÖC in this area. According to this new results, the expansion of the TC towards north as well as the transition between the ÖC and the Koralpe-Wölz high-pressure nappe system have to be the focus of further studies in this area.