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Magmatic Research Team

We are a group of young geoscientists (including some young souls trapped in aging body) using the field-, experiment- and modeling-based approach to investigate the magma evolution from its source in the Earth’s crust or mantle to its final intrusion or eruption. Our research interests cover variable aspects of igneous petrogenesis ranging from magma generation, through transport, differentiation and emplacement to its final solidification as well as the study of the pre- and syn-eruptive conditions and processes of active volcanoes. We employ broad scale of methods from fieldwork and conventional petrography through major- and trace-element and isotope geochemistry, numerical modelling and laboratory experiments.

Research topics:

  • Field relations, tectonics, emplacement of granitic plutons (KV)
  • Crystallization and internal dynamics of magma chambers (VŠ)
  • Igneous textures, their origin and significance (VŠ, ŠK)
  • Pre- and syn-eruptive magmatic processes (e.g. phase equilibria, disequilibrium crystallization, zoning in minerals and melt inclusions) (AF)
  • Thermobarometry and PTt development of magmatic complexes (ŠK, VJ)
  • Geochemistry and petrogenesis of granitoid rocks, role of magma mixing and mingling (VJ, ŠK, MŠ)
  • Processes in subduction zones, arc- and behind-arc igneous rocks (VJ)
  • Ultrapotassic igneous activity, processes of mantle enrichment (VJ, ŠK, KV)
  • Geochemistry and genesis of high-pressure metaigneous granulites (VJ)
  • Applications of Sr–Nd–Li–Hf–Mg isotopes in igneous petrogenesis (VJ)
  • Numerical modelling in igneous geochemistry, computing in geosciences (VJ)
  • Origin of granite-related mineral deposits (MŠ)

The recent research projects have been concerned with the igneous complexes of the Bohemian Massif and other areas of the European Variscides, Sierra Nevada (California), Kaoko Belt (Namibia), southern Brazil, Pacific volcanic front/back-arc (Nicaragua), Central Asian Orogenic Belt (Mongolia), and Antarctic Peninsula (Graham Land).

 

Staff

 

Alessandro Fabbrizio

Assistant professor

Experimental petrology,  geochemistry, volcanology

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Vojtěch Janoušek

Associate professor

Isotope geochemistry, geochronology, geochemistry-based numerical modelling

 

 

Šárka Kubínová

Assistant professor

Igneous petrology, mineral textures, geochemistry  

 

Václav Špillar

Assistant professor

Igneous crystallization, physicochemical processes in magma chambers

 

Miroslav Štemprok

Professor emeritus

Granites and related ore deposits

 

Kryštof Verner

Associate professor

Field relations, structural geology, granitic rocks

 

  

Our students

  • Eliška Bršlicová (VŠ) - Porphyritic dyke rocks
  • Štěpán Dvořák (KV) - Tectonic and magmatic evolution of the Ethiopian Rift
  • Barbora Endrštová (VŠ) - Thermal convection in magma chambers
  • Mgr. Tadeáš Hájek (KV) - Post-collisional granitoids of the Moldanubian Batholith 
  • Miloslava Hánová (VŠ) - Trace elements in corrundum
  • Mgr. Markéta Jirků (AF) - Trace elements in apatite
  • Mgr. Radka Kalinová (KV) - Late-Variscan and post-Vasriscan deformation of the Bohemian Massif
  • Johana Kešnerová (VJ) - Geochemistry of ophiolite magmatic rocks
  • Dominika Linzerová (VŠ) - Crystallization processes in mafic magma chambers
  • Leta Megerssa, M.Sc. (KV) - Granitic plutonism in the Bohemian Massif
  • Mgr. Jakub Mysliveček (Vladislav Rapprich) - Crystallization of alkaline and carbonatite magmas

Equipment

 

Funding

GACR (Grant Agency Czech Republic)  Standard Project number 18-01982S: "Experimental determination of the effect of oxygen fugacity on mineral/melt partitioning for the Highly Siderophile Elements at mantle conditions" (AF)

This innovative project aims, for the first time, to define the role of the oxygen fugacity on the partitioninals, dug behavior of the Highly Siderophile Elements (HSE), how they are incorporated in mantle minerring mantle melting and crystal-liquid fractionation, and how their bulk partition coefficients change with changing redox conditions. The redox state has a critical effect on the partitioning behavior of the highly siderophile elements during mantle melting. This has had long-term effects on planetary differentiation not only for the Earth, but also for the extraterrestrial bodies. This study will improve both the knowledge of the geochemical behavior of these elements during mantle melting and magma genesis, that the knowledge of differentiation processes in extraterrestrial systems, where the redox conditions are more reduced than those of the Earth, such as the Moon.​

 

GACR (Grant Agency Czech Republic)  Standard Project number 18-24378S: “Petrogenesis of (ultra-)potassic magmas in the European Variscides – implications for development of collisional orogens and crustal growth models” (VJ)

Deep subduction and relamination of felsic continental crust rich in radiogenic elements have far-reaching consequences for the thermal state and rheology of the orogenic lithosphere as well as mantle enrichment processes. The project proposes an integrated study of petrology, geochemistry and Sr–Nd–Pb–Li–O–Mg–Cr isotopic systems in Early Carboniferous ultrapotassic plutons, related to deep subduction of continental crust, in Bohemian Massif, French Massif Central and Vosges. This study should provide pivotal information about mantle and crustal sources of parental magmas in the Variscan orogenic root (Moldanubian Zone) and their further evolution. In turn, these data represent a key input into any large-scale model aimed at explaining the geotectonic development of the European crust and lithospheric mantle. More importantly, the proposed research should improve our understanding of the nature and genesis of ultrapotassic magmas with peculiarly mixed mantle–crustal signatures, as well as the general geotectonic development of younger collisional orogens, e.g. Andes or Himalayas.

 

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