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Thesis

Anatomy of an ancient subduction channel in the depth range of its seismogenic coupling zone - insights from field studies in the Swiss Alps and Southern Chile

Authors

Bachmann,  Raik
Scientific Technical Report STR, Deutsches GeoForschungsZentrum;
3.1 Lithosphere Dynamics, 3.0 Geodynamics and Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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0801.pdf
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Citation

Bachmann, R. (2008): Anatomy of an ancient subduction channel in the depth range of its seismogenic coupling zone - insights from field studies in the Swiss Alps and Southern Chile, PhD Thesis, (Scientific Technical Report STR ; 08/01), Potsdam : Deutsches GeoForschungsZentrum GFZ.
https://doi.org/10.2312/GFZ.b103-08012


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_8754
Abstract
The here presented study contributes to the understanding of convergent plate boundaries in the depth range of their former seismogenic zone aiming at testing inferences and hypotheses of the various kinematic and mechanical concepts presented for the seismogenic zone. Therefore, we use the complete exposure of this part of a former plate interface in the European Alps, one of the best-studied mountain belts that has resulted from successive subduction, accretion and collision, where we analyzed a mélange zone tracing the plate interface zone of the fossil convergent plate margin. Additionally, we included information from Southern Chile, where material, which formerly underwent deformation along the plate interface, was exhumed to the surface by large scale basal accretion at a certain depth to the base of the upper plate. This part of the study provided additive hints for structures and processes occurring along the plate interface zone of convergent plate margins (i.e. within the subduction channel), at least for a restricted PT domain.