Collett, S. , Schulmann, K. , Deiller, P. , Štípská, P. , Peřestý, V. , Ulrich, M. , Jiang, Y. , De Hoÿm de Marien, L. and Míková, J. 2022. Reconstruction of the mid-Devonian HP-HT metamorphic event in the Bohemian Massif (European Variscan belt). Geoscience Frontiers. 13, 101374.
DOI Google ScholarGranulite-migmatite domes - insight into the Devonian and Carboniferous development of the Variscan belt
We aim to study and compare various aspects that are related to exhumation of deeply buried felsic rocks that form now Devonian and Carboniferous granulite-migmatite domes in the Variscan belt and contributed thus to large-scale crustal differentiation. The role of melting on the rheological weakening of the rocks is known for a long time, but differences of the melting processes of metasedimentary rocks and granitoid rocks, with respect to fluid-present, dehydration and fluid-fluxed melting and relation to the P-T path of the rocks are rarely studied simultaneously. These relations influence when and where melting – and therefore rheological weakening occurs, and how buoyancy changes, and are likely to explain differences in Devonian and Carboniferous orogenic processes in terms of timing and location of the exhumation of granulite-migmatite domes. We already identified granulite-migmatite domes exhumed at different time, with contrasting lithologies, and likely exhibiting contrasting melting processes – which allows such comparative study.
Period
-Registration number
19-25035SProvider
GAČRBudget
262 000 EURPrincipal investigators
Dr. Pavla ŠtípskáProject publications
Závada, P. , Štípská, P. , Hasalová, P. , Racek, M. , Jeřábek, P. , Schulmann, K. , Kylander-Clark, A. and Holder, R. 2021. Monazite geochronology in melt-percolated UHP meta-granitoids: An example from the Erzgebirge continental subduction wedge, Bohemian Massif. Chemical Geology. 559, 119919.
DOI Google ScholarMaierová, P. , Schulmann, K. , Štípská, P. , Gerya, T. and Lexa, O. 2021. Trans-lithospheric diapirism explains the presence of ultra-high pressure rocks in the European Variscides. Communications Earth & Environment. 2, 1–9.
DOI Google ScholarTabaud, A.-S. , Štípská, P. , Mazur, S. , Schulmann, K. , Míková, J. , Wong, J. and Sun, M. 2021. Evolution of a Cambro-Ordovician active margin in northern Gondwana: Geochemical and zircon geochronological evidence from the Góry Sowie metasedimentary rocks, Poland. Gondwana Research. 90, 1–26.
DOI Google ScholarCollett, S. , Štípská, P. , Schulmann, K. , Míková, J. and Kröner, A. 2021. Tectonic significance of the Variscan suture between Brunovistulia and the Bohemian Massif. Journal of the Geological Society. 178.
DOI Google ScholarŠtípská, P. , Schulmann, K. , Racek, M. , Lardeaux, J.-M. , Hacker, B.R., Kylander-Clark, A.R.C., Holder, R. and Košuličová, M. 2020. Finite pattern of Barrovian metamorphic zones: interplay between thermal reequilibration and post-peak deformation during continental collision—insights from the Svratka dome (Bohemian Massif). International Journal of Earth Sciences. 109, 1161–1187.
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