Deiller, P. , Štípská, P. , Ulrich, M. , Schulmann, K. , Collett, S. , Peřestý, V. , Hacker, B. , Kylander-Clark, A. , Whitechurch, H. and Lexa, O. 2021. Eclogite subduction wedge intruded by arc-type magma: The earliest record of Variscan arc in the Bohemian Massif. Gondwana Research. 99, 220–246.
Google ScholarThe role of inherited continental margin architecture on early Variscan convergence
It is well known that the inherited architecture of extended continental margins controls the collisional processes and deformation structure of ensuing orogens. However, the classical hyperextended margins of the Atlantic type differ substantially from the extended continental margins above the west-Pacific subduction systems, which are characterized by massive crustal melting, intrusion of large portions of mafic magmas and HT-LP metamorphism. In this proposal, we suggest that a Pacific type hot margin developed during Ordovician times along the northern margin of Gondwana and was subsequently incorporated into the Devonian subduction-collisional structure of the western margin of the Bohemian Massif. We intend to apply multidisciplinary approach combining geological and geophysical methods to characterize the architecture of such an orogen and propose its evolutionary thermomechanical model which will be tested by means of numerical modelling. The proposed model is dramatically overhauling our current view on the Variscan orogeny in Europe.
Period
-Registration number
17-22207SProvider
GAČRBudget
126 000 EURPrincipal investigators
Dr. Pavla ŠtípskáProject publications
Collett, S. , Schulmann, K. , Štípská, P. and Míková, J. 2020. Chronological and geochemical constraints on the pre-variscan tectonic history of the Erzgebirge, Saxothuringian Zone. Gondwana Research. 79, 27–48.
DOI Google ScholarCollett, S. , Štípská, P. , Schulmann, K. , Peřestý, V. , Soldner, J. , Anczkiewicz, R. , Lexa, O. and Kylander-Clark, A. 2018. Combined Lu-Hf and Sm-Nd geochronology of the Mariánské Lázně Complex: New constraints on the timing of eclogite- and granulite-facies metamorphism. Lithos. 304–307, 74–94.
DOI Google ScholarMaierová, P. , Schulmann, K. and Gerya, T. 2018. Relamination Styles in Collisional Orogens. Tectonics. 37, 224–250.
DOI Google Scholar