The western end of the Eoalpine High‐Pressure Belt (Texel unit,South Tyrol / Italy) |
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| Authors: | Hannah Pomella David Flöss Romed Speckbacher Peter Tropper Bernhard Fügenschuh |
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| Affiliation: | 1. Institute of Geology, University of Innsbruck, Innsbruck, Austria;2. Section 3. of Earth and Environmental Science, University of Geneva, Genève, Switzerland;4. GEOMAR, Helmholtz Centre for Ocean Research, Kiel, Germany;5. Institute of Mineralogy and Petrography, University of Innsbruck, Innsbruck, Austria |
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| Abstract: | Eclogites in the Texel Unit (Eastern Alps; South Tyrol, Italy) represent the westernmost outcrops of the E–W striking Eoalpine High‐Pressure Belt (EHB). East of the Tauern Window, the EHB forms part of a Cretaceous intracontinental south‐dipping subduction/collision zone; however, the same nappe stack displays a northwest dip at its western end. This prominent change in dip direction gave rise to discussions on the general setting of the Eoalpine collision. Based on our own observations and literature data, we present a new tectonic model for the western end of the EHB. Due to the special situation of this area at the tip of the Southalpine indenter, originally south(east) dipping structures became overturned, and former thrusts appear as normal faults (e.g. Schneeberg fault zone) while former normal faults presently display thrust geometries (e.g. Jaufen fault). Thus, we explain the current configuration with a coherent Eoalpine subduction direction. |
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