TY  - BOOK
A1  - Alnemr, Rehab
A1  - Polyvyanyy, Artem
A1  - AbuJarour, Mohammed
A1  - Appeltauer, Malte
A1  - Hildebrandt, Dieter
A1  - Thomas, Ivonne
A1  - Overdick, Hagen
A1  - Schöbel, Michael
A1  - Uflacker, Matthias
A1  - Kluth, Stephan
A1  - Menzel, Michael
A1  - Schmidt, Alexander
A1  - Hagedorn, Benjamin
A1  - Pascalau, Emilian
A1  - Perscheid, Michael
A1  - Vogel, Thomas
A1  - Hentschel, Uwe
A1  - Feinbube, Frank
A1  - Kowark, Thomas
A1  - Trümper, Jonas
A1  - Vogel, Tobias
A1  - Becker, Basil
ED  - Meinel, Christoph
ED  - Plattner, Hasso
ED  - Döllner, Jürgen Roland Friedrich
ED  - Weske, Mathias
ED  - Polze, Andreas
ED  - Hirschfeld, Robert
ED  - Naumann, Felix
ED  - Giese, Holger
T1  - Proceedings of the 4th Ph.D. Retreat of the HPI Research School on Service-oriented Systems Engineering
T3  - Technische Berichte des Hasso-Plattner-Instituts für Digital Engineering an der Universität Potsdam - 31 
KW  - Hasso-Plattner-Institut
KW  - Forschungskolleg
KW  - Klausurtagung
KW  - Service-oriented Systems Engineering
KW  - Hasso Plattner Institute
KW  - Research School
KW  - Ph.D. Retreat
KW  - Service-oriented Systems Engineering
Y1  - 2010
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-40838
SN  - 978-3-86956-036-6
PB  - Universitätsverlag Potsdam
CY  - Potsdam
ER  - 
TY  - GEN
A1  - Pourteau, Amaury
A1  - Scherer, Erik E.
A1  - Schorn, Simon
A1  - Bast, Rebecca
A1  - Schmidt, Alexander
A1  - Ebert, Lisa
T1  - Thermal evolution of an ancient subduction interface revealed by Lu–Hf garnet geochronology, Halilbağı Complex (Anatolia)
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - The thermal structure of subduction zones exerts a major influence on deep-seated mechanical and chemical processes controlling arc magmatism, seismicity, and global element cycles. Accretionary complexes exposed inland may comprise tectonic blocks with contrasting pressure-temperature (P-T) histories, making it possible to investigate the dynamics and thermal evolution of former subduction interfaces. With this aim, we present new Lu-Hf geochronological results for mafic rocks of the Halilbagi Complex (Anatolia) that evolved along different thermal gradients. Samples include a lawsonite-epidote blueschist, a lawsonite-epidote eclogite, and an epidote eclogite (all with counter-clockwise P-T paths), a prograde lawsonite blueschist with a "hairpin"-type P-T path, and a garnet amphibolite from the overlying sub-ophiolitic metamorphic sole. Equilibrium phase diagrams suggest that the garnet amphibolite formed at similar to 0.6-0.7 GPa and 800-850 degrees C, whereas the prograde lawsonite blueschist records burial from 2.1 GPa and 420 degrees C to 2.6 GPa and 520 degrees C. Well-defined Lu-Hf isochrons were obtained for the epidote eclogite (92.38 +/- 0.22 Ma) and the lawsonite-epidote blueschist (90.19 +/- 0.54 Ma), suggesting rapid garnet growth. The lawsonite-epidote eclogite (87.30 +/- 0.39 Ma) and the prograde lawsonite blueschist (ca. 86 Ma) are younger, whereas the garnet amphibolite (104.5 +/- 3.5 Ma) is older. Our data reveal a consistent trend of progressively decreasing geothermal gradient from granulite-facies conditions at similar to 104 Ma to the epidote-eclogite facies around 92 Ma, and the lawsonite blueschist-facies between 90 Ma and 86 Ma. Three Lu-Hf garnet dates (between 92 Ma and 87 Ma) weighted toward the growth of post-peak rims (as indicated by Lu distribution in garnet) suggest that the HP/LT rocks were exhumed continuously and not episodically. We infer that HP/LT metamorphic rocks within the Halilbagi Complex were subjected to continuous return flow, with "warm" rocks being exhumed during the tectonic burial of "cold" ones. Our results, combined with regional geological constraints, allow us to speculate that subduction started at a transform fault near a mid-oceanic spreading centre. Following its formation, this ancient subduction interface evolved thermally over more than 15 Myr, most likely as a result of heat dissipation rather than crustal underplating.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 632 
KW  - subduction
KW  - Lu/Hf dating of garnet
KW  - metamorphic sole
KW  - eclogite
KW  - blueschist
KW  - lawsonite
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-424651
SN  - 1866-8372
IS  - 632
ER  -