The late glacial Lake Tuetten Complex as a Result of the Melting History on the Eastern Edge of the Chiemsee Glacier and its Relation to the "Chiemgau Impakt" (Traunstein District, Upper Bavaria)

The deglaciation history of the southeastern Chiemsee Glacier is described by sedimentological and terrain morphological investigations. As the Bad Adelholzen-Erlstatter Rinne dried up during the late Wurmian, the melting of the ice lobe located in the Grabenstatt bay resulted in a concentric sequence of ever deepening peripheral drainage channels. The oldest channels of this phase changed into a centripetal direction near Chieming, the younger ones did so further south. The development of the Tuttensee Complex has to be seen in the context of this development. It is the result of the glaciofluvial and -lacustrine sedimentation triggered by the gradual deglaciation of the Grabenstatt bay in combination with dead ice formation in the area of today's Lake Tuttensee. This is supported by the stepwise sequence of the described peripheral discharge channels with their increasingly lower discharge levels, the level equivalence of three of these channels of this phase with the Tuttensee Terraces as well as the glaciofluvial or deltaic sediment structure or maturity typical for the respective terrace formation. This result is a corrective to the now falsified Chiemgau impact hypothesis that the Tuttensee is supposed to be an impact crater. Since this assumption is propagated by numerous media, especially in the German-speaking countries, the following article is written in German in order to be accessible to a broad readership.