The western end of the Eoalpine High-Pressure Belt (Texel unit, South Tyrol / Italy)

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 sta...

Full description

Saved in:
Bibliographic Details
Published in:Terra nova (Oxford, England) England), 2016-02, Vol.28 (1), p.60-69
Main Authors: Pomella, Hannah, Flöss, David, Speckbacher, Romed, Tropper, Peter, Fügenschuh, Bernhard
Format: Article
Language:English
Subjects:
Fault lines
Plate tectonics
Seismology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0954-4879
1365-3121
DOI:10.1111/ter.12191