Simon Schorn

Simon Schorn
Karl-Franzens-Universität Graz | KFU Graz · Institute of Earth Sciences

PhD

About

31
Publications
8,863
Reads
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133
Citations
Introduction
My interests revolve around metamorphic petrology, thermodynamic modelling using THERMOCALC and development of actvity-composition relationships of petrological interest. I like to use computational petrology to investigate processes that occur in the orogenic crust, such as (de)hydration, melting and their thermal consequences during ongoing metamorphism. Check out the website: https://hpxeosandthermocalc.org/
Additional affiliations
January 2016 - July 2019
University of Cape Town
Position
  • PhD Student
Description
  • PhD project entitled "High-temperature metamorphism in the western Namaqua–Natal Metamorphic Province (southern Africa): implications for low-pressure granulite terranes"
August 2013 - January 2014
Aarhus University
Position
  • Erasmus Student
Education
October 2012 - October 2015
Karl-Franzens-Universität Graz
Field of study
  • Earth Sciences
September 2009 - September 2012
University of Padova
Field of study
  • Earth Sciences

Publications

Publications (31)
Article
Water is an essential ingredient in transforming primitive mantle-derived (mafic) rocks into buoyant (felsic) continental crust, thereby driving the irreversible differentiation of Earth's lithosphere. The occurrence in Archaean cratons of sodic granites of the tonalite–trondhjemite–granodiorite (TTG) series, high-MgO variolitic basalts, high-Mg di...
Article
The Paleoproterozoic era is a critical tuning period for the transitions in global geodynamic regimes and plate tectonic processes. However, detailed pressure–temperature–time (P–T–t) paths of Paleoproterozoic metamorphic rocks worldwide are scarce, which hinders our understanding of deep thermal state and relevant tectonic processes at that time....
Article
Full-text available
The incipient development of diagnostic high-pressure assemblages-the 'eclogitization'-of granitoids, such as plagioclase-breakdown and small-scale formation of garnet and phengite does not require exogenous hydration because unlike dry protoliths like basalt/gabbro or granulite, granitoids s.l. contain crystallographically-bound H2O in biotite. Du...
Conference Paper
Full-text available
The Central European Variscan orogen consists of a mosaic of various peri-Gondwana terranes, which separated from Gondwana at various times during the Cambrian to Devonian. Later, during the Devonian-Carboniferous they were between the converging continents of Gondwana and Laurussia as the Rheic ocean closed. While the major part of the Bohemian Ma...
Article
Full-text available
Epidote eclogites embedded in paragneisses from the Austrian Eastern Alps host rare, decimetre- to metre-sized planar pegmatitic segregations (‘pegmatoids’) that consist of a hornblende–plagioclase–epidote–titanite–quartz assemblage. The pegmatoids cut the primary eclogite foliation at a high angle, show abrupt terminations and exhibit numerous mic...
Article
Full-text available
Aluminous metapelitic granulites from the central Namaqua Sector of the Namaqua––Natal Metamorphic Province, South Africa, host partly retrogressed hercynite–quartz assemblages. These assemblages record peak P–T conditions of 860–890°C and 5–5.5 kbar, estimated via thermodynamic modelling and ternary feldspar thermometry. In-situ U–Pb geochronology...
Article
Full-text available
Phase equilibrium modelling of a conformable sequence of supracrustal lithologies from the Bushmanland Subprovince of the Namaqua-Natal Metamorphic Complex (South Africa) reveal a disparity of some 60-70°C in estimated peak metamorphic temperature. Aluminous metapelites equilibrated at ~770-790°C whereas two-pyroxene granulite and garnet-orthopyrox...
Article
Full-text available
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...
Article
Full-text available
Metamorphic rocks evolve through chemical reactions that consume energy in order to advance. Melting reactions in particular are strongly endothermic and may consume a substantial proportion of the orogenic heat budget. While this has been established qualitatively, modern thermodynamic data sets allow quantification of the thermal consequences for...
Article
Full-text available
Polymetamorphic metapelites and embedded eclogites share a complex, episodic interplay of dehydration and fluid infiltration at the eclogite type-locality (Saualpe–Koralpe, Eastern Alps, Austria). The metapelites inherited a fluid content (i.e. mineral-bound OH expressed in terms of mol.% H2O) of ~6–7 mol.% H2O from high-T–low-P metamorphism experi...
Article
Full-text available
Permian-aged metagabbros from the eclogite type-locality in the eastern European Alps were partially to completely transformed to eclogite during Eoalpine intracontinental subduction. Microtextures developed along a preserved fluid infiltration and reaction front in the gabbros record the incipient gabbro-to-eclogite transition, allowing the detail...
Article
Full-text available
The so-called Plankogel detachment is an east-west trending, south-dipping low-angle structure that juxtaposes the high-P rocks of the eclogite type locality of the eastern European Alps against amphibolite facies rocks to the south. It occurs in both the Saualpe and Koralpe Complex in eastern Austria. During Cretaceous intracontinental subduction,...
Thesis
This thesis represents the petrological approach in understanding the metamorphic history of a well-known area of the Austrian Eastern Alps. The Saualpe-Koralpe area is of particular petrological interest because of mainly two reasons: firstly, it is a polymetamorphic terrane which allows investigating two fundamentally distinct metamorphic events...

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