Soejono, I. , Collett, S. , Kohút, M. , Janoušek, V. , Schulmann, K. , Bukovská, Z. , Novotná, N. , Zelinková, T. , Míková, J. , Hora, J. and 2024. Paleogeography of the Gondwana passive margin fragments involved in the Variscan and Alpine collisions: Perspectives from metavolcanic-sedimentary basement of the Western Carpathians. Earth-Science Reviews. 104763.
DOI Google ScholarCLR person interests, research and publications
Researcher
Prof. Vojtěch Janoušek
Alumni
Igneous Geochemistry and Isotopic Geology
+420251085229
vojtech.janousek@geology.cz
RID:
B-6789-2008
About me
Primarily, my main job consists in studying petrology, geochemistry and petrogenesis of igneous and metamorphic rocks. They come mostly from Bohemian Massif, but we have had also projects in Sierra Nevada, Nicaragua, Namibia or Antarctic Peninsula. Apart from that, we are busy developing free tools for interpretation and graphical presentation of geochemical data. My pet are granitoids (and Hercynian granitoids of the Central Bohemian Pluton in particular). Since 2002 I have been involved in a project dealing with petrogenesis of South Bohemian granulites. Arguably the most important project I have been involved in is the open-access journal of the Czech Geological Society, since 2007 published under the name Journal of Geosciences.
Research interests
- Petrology, geochemistry and petrogenesis of granitoid rocks geochemistry and genesis of Variscan granulites
- Rb–Sr and Sm–Nd geochronology (magmatic as well as metamorphic rocks)
- Sr and Nd isotopes in petrogenetic studies
- Strontium chemostratigraphy
- Numerical modelling in igneous geochemistry, computing in geosciences
Research projects
Tracking magmas from source to pluton: new insight into granites diversity
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Melting of the crust leads to granitic magmas that vary widely in composition and in ability to generate metal deposits or cause explosive volcanism. A number of superposing, competing processes control this variability. Much has been learnt from investigating processes late in the magma history, but not much is known about magma generation at depth and what happens to it during transport to the upper crust. Indirect knowledge or inferences based on little data, leads to speculation and controversies.
The role of Paleozoic accretionary and collisional orogens on the formation and growth of continental crust
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Selected segments of Euroasian orogenic system are used to constrain relative contribution of contrasting processes of continental construction in collisional and accretionary orogenic systems. Principal objectives of the proposal are: (i) identification of the individual terranes, kinematic analysis of their movements and characterization of deformation style connected with their amalgamation; (ii) estimation of net crustal growth vs. recycling of preexistent crustal material.
Crustal growth and construction of continental crust exemplified by Central Asian Orogenic Belt
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On the modern Earth, continental crust is created mainly at subduction zones. Here, release of aqueous fluid from dehydrating oceanic crust causes melting in the mantle wedge and generates the calc-alkaline magmas that evolve into granitoid continental crust. This project aims to understand crustal growth and possible crustal construction mechanisms, using the Mongolian and Chinese tract of the Central Asian Orogenic Belt (CAOB) as an example. The main questions raised here are: What were the cause, rate and timing of continental growth in the CAOB?
Publications
Zelinková, T. , Racek, M. , Janoušek, V. , Štípská, P. , Abart, R. and Asenbaum, R. 2024. Metasomatic interaction of ultramafic mantle xenoliths with their felsic HP–UHT granulite host (Moldanubian Domain, Bohemian Massif in Lower Austria). Journal of Petrology. 65.
DOI Google ScholarSukhbaatar, T. , Schulmann, K. , Janoušek, V. , Soejono, I. , Lexa, O. , Míková, J. , Hora, J. , Song, D. , Xiao, W. , Poujol, M. and 2024. Magmatic and sedimentological arguments for an Ediacaran active margin in the Bayankhongor Zone in western Mongolia, Central Asian Orogenic Belt. Gondwana Research. 134, 385–409.
DOI Google ScholarHanžl, P. , Janoušek, V. , Hrdličková, K. , Burianek, D. , Gerel, O. , Altanbaatar, B. , Hora, J. and Coupek, P. 2023. From magmatic arc to a post-accretionary setting: Late Palaeozoic granitoid plutons in the northwestern Trans-Altai Zone, Mongolia. Journal of Geosciences. 68, 25–66.
DOI Google ScholarSoejono, I. , Janoušek, V. , Peřestý, V. , Schulmann, K. , Svojtka, M. , Hanžl, P. , Hora, J. , Míková, J. , Štípská, P. , Guy, A. , Collett, S. and Otgonbaatar, D. 2023. From Rodinian passive margin to peri-Siberian continental arc: Evidence from the multiphase Neoproterozoic–early Paleozoic magmatic record of the Zavkhan Block in the Mongolian Collage. Gondwana Research.
DOI Google ScholarBurianek, D. , Soejono, I. , Schulmann, K. , Janoušek, V. , Hanžl, P. , Čáp, P. , Bold, U. , Svojtka, M. , Collett, S. and Żácek, V. 2022. Subduction-controlled temporal and spatial variations in early Palaeozoic sedimentary and volcanic record of the Mongol-Altai Domain. Journal of Asian Earth Sciences. 230, 105182.
DOI Google ScholarSoejono, I. , Peřestý, V. , Schulmann, K. , Čopjaková, R. , Svojtka, M. , Štípská, P. , Burianek, D. , Janoušek, V. and Lexa, O. 2021. Structural, metamorphic and geochronological constraints on Palaeozoic multi-stage geodynamic evolution of the Altai accretionary wedge system (Hovd Zone, western Mongolia). Lithos. 396, 106204.
DOI Google ScholarHora, J. , Tabaud, A.-S. , Janoušek, V. and Kochergina, Y. , V 2021. Potassic magmas of the Vosges Mts.(NE France) delimit the areal extent and nature of long-gone Variscan orogenic mantle domains. Lithos. 106304.
DOI Google ScholarJanoušek, V. , Jiang, Y. , Burianek, D. , Schulmann, K. , Hanžl, P. , Soejono, I. , Kröner, A. , Altanbaatar, B. , Erban, V. , Lexa, O. , Ganchuluun, T. and Košler, J. 2018. Cambrian–Ordovician magmatism of the Ikh-Mongol Arc System exemplified by the Khantaishir Magmatic Complex (Lake Zone, south–central Mongolia). Gondwana Research. 54, 122–149.
DOI Google ScholarSoejono, I. , Čáp, P. , Míková, J. , Janoušek, V. , Burianek, D. and Schulmann, K. 2018. Early Palaeozoic sedimentary record and provenance of flysch sequences in the Hovd Zone (western Mongolia): Implications for the geodynamic evolution of the Altai accretionary wedge system. Gondwana Research. 64, 163–183.
DOI Google ScholarNguyen, H. , Hanžl, P. , Janoušek, V. , Schulmann, K. , Ulrich, M. , Jiang, Y. , Lexa, O. , Altanbaatar, B. and Deiller, P. 2018. Geochemistry and geochronology of Mississippian volcanic rocks from SW Mongolia: Implications for terrane subdivision and magmatic arc activity in the Trans-Altai Zone. Journal of Asian Earth Sciences. 164, 322–343.
DOI Google ScholarBurianek, D. , Schulmann, K. , Hrdličková, K. , Hanzl, P. , Janoušek, V. , Gerdes, A. and Lexa, O. 2017. Geochemical and geochronological constraints on distinct Early-Neoproterozoic and Cambrian accretionary events along southern margin of the Baydrag Continent in western Mongolia. Gondwana Research. 47, 200–227.
DOI Google ScholarHanžl, P. , Krejčí, Z. , Altanbaatar, B. , Lexa, O. , Burianek, D. , Janoušek, V. , Schulmann, K. , Jiang, Y. and Hrdličková, K. 2017. Geology of the Gobi Altai and Tseel terranes in the central part of the Sagsai River Watershed, SE Mongolian Altai. Journal of Maps. 13, 270–275.
Google ScholarJiang, Y. , Schulmann, K. , Kröner, A. , Sun, M. , Lexa, O. , Janoušek, V. , Burianek, D. , Yuan, C. and Hanžl, P. 2017. Neoproterozoic-Early Paleozoic Peri-Pacific Accretionary Evolution of the Mongolian Collage System: Insights From Geochemical and U-Pb Zircon Data From the Ordovician Sedimentary Wedge in the Mongolian Altai Authors. Tectonics. 36, 2305–2331.
DOI Google ScholarJiang, Y. , Schulmann, K. , Sun, M. , Štípská, P. , Guy, A. , Janoušek, V. , Lexa, O. and Yuan, C. 2016. Anatexis of accretionary wedge, Pacific-type magmatism, and formation of vertically stratified continental crust in the Altai Orogenic Belt. Tectonics. 35, 3095–3118.
DOI Google ScholarMagna, T. , Novák, M. , Cempírek, J. , Janoušek, V. , Ullmann, C.V. and Wiechert, U. 2016. Crystallographic control on lithium isotope fractionation in Archean to Cenozoic lithium-cesium-tantalum pegmatites. Geology. 44, 655–658.
DOI Google ScholarMaierová, P. , Schulmann, K. , Lexa, O. , Guillot, S. , Štípská, P. , Janoušek, V. and Čadek, O. 2016. European Variscan orogenic evolution as an analogue of Tibetan-Himalayan orogen: Insights from petrology and numerical modeling. Tectonics. 35, 1760–1780.
DOI Google ScholarJanoušek, V. , Moyen, J.-F. , Martin, H. , Erban, V. and Farrow, C.M. 2016. Geochemical Modelling of Igneous Processes–Principles And Recipes in R Language: Bringing the Power of R to a Geochemical Community. Springer Berlin Heidelberg.
DOI Google ScholarHanžl, P. , Schulmann, K. , Janoušek, V. , Lexa, O. , Hrdličková, K. , Jiang, Y. , Burianek, D. , Altanbaatar, B. , Ganchuluun, T. and Erban, V. 2016. Making continental crust: origin of Devonian orthogneisses from SE Mongolian Altai. Journal of GEOsciences. 61, 25–50.
DOI Google ScholarSoejono, I. , Burianek, D. , Svojtka, M. , Żácek, V. , Čáp, P. and Janoušek, V. 2016. Mid-Ordovician and Late Devonian magmatism in the Togtokhinshil Complex: new insight into the formation and accretionary evolution of the Lake Zone (western Mongolia). Journal of GEOsciences. 61, 5–23.
DOI Google ScholarBurianek, D. , Janoušek, V. , Hanžl, P. , Jiang, Y. , Schulmann, K. , Lexa, O. and Altanbaatar, B. 2016. Petrogenesis of the Late Carboniferous Sagsai Pluton in the SE Mongolian Altai. Journal of GEOsciences. 61, 67–92.
DOI Google ScholarJanoušek, V. , Moyen, J.-F. , Martin, H. , Erban, V. and Farrow, C.M. 2015. Geochemical Modelling of Igneous Processes Principles and Recipes. R Language. Bringing the Power of R to a Geochemical Community. Springer-Verlag.
Google ScholarGuy, A. , Schulmann, K. , Janoušek, V. , Štípská, P. , Armstrong, R. , Belousova, E. , Dolgopolova, A. , Seltmann, R. , Lexa, O. , Jiang, Y. and Hanzl, P. 2015. Geophysical and geochemical nature of relaminated arc-derived lower crust underneath oceanic domain in southern Mongolia. Tectonics.
DOI Google ScholarKusbach, V. , Janoušek, V. , Hasalová, P. , Schulmann, K. , Fanning, C.M., Erban, V. and Ulrich, S. 2015. Importance of crustal relamination in origin of the orogenic mantle peridotite-high-pressure granulite association: example from the Náměšť Granulite Massif (Bohemian Massif, Czech Republic). Journal of the Geological Society (London).
DOI Google ScholarTabaud, A.-S. , Janoušek, V. , Skrzypek, E. , Schulmann, K. , Rossi, P. , Whitechurch, H. , Guerrot, C. and Paquette, J. 2015. Chronology, petrogenesis and heat sources for successive Carboniferous magmatic events in the southern-central Variscan Vosges Mts. Journal of the Geological Society (London). 87–102.
Google ScholarSchulmann, K. , Lexa, O. , Janoušek, V. , Lardeaux, J.-M. and Edel, J.B. 2014. Anatomy of a diffuse cryptic suture zone: An example from the Bohemian Massif, European Variscides. Geology.
Google ScholarLaurent, A. , Janoušek, V. , Magna, T. , Schulmann, K. and Míková, J. 2014. Petrogenesis and geochronology of a post-orogenic calc-alkaline magmatic association: the Żulová Pluton, Bohemian Massif. Journal of Geosciences. 59, 415–440.
DOI Google ScholarVrána, S. , Janoušek, V. and Franěk, J. 2013. Contrasting mafic to felsic HP-HT granulites of the Blanský les Massif (Moldanubian Zone of southern Bohemia): complexity of mineral assemblages and metamorphic reactions. Journal of Geosciences. 347–378.
Google ScholarMachek, M. , Roxerová, Z. , Janoušek, V. , Staněk, M. , Petrovský, E. and René, M. 2013. Petrophysical and geochemical constraints on alteration processes in granites. Studia Geophysica et Geodaetica. 710–730.
Google ScholarŽák, J. , Soejono, I. , Janoušek, V. and Venera, Z. 2012. Magnetic fabric and tectonic setting of the Early to Middle Jurassic felsic dykes at Pitt Point and Mount Reece, eastern Graham Land, Antarctica. Antarctic Science. 24, 45–58.
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