Prof. RNDr. Jiří Žák, Ph.D.
Contact Information
Address: Albertov 6, Prague, 12843, office P16B
Email: jirizak@natur.cuni.cz
Phone: +420 221951475
Research websites: Continental Tectonics Group| Google Scholar| ResearchGate| ResearcherID| ORCID| ScopusID
CV & Professional Career
1976 Born in Plzeň (Pilsen), The Capital of Beer
1998/1999 Study stay at Royal School of Mines, Imperial College, London, UK
2000 Graduated from Charles University, Prague, in Petrology and Structural Geology
Since 2002 Employed at the Institute of Geology and Paleontology, Charles University, Prague
2004 Ph.D. in Geological Sciences, Charles University, Prague
2004/2009 Research Geologist (part-time) at the Czech Geological Survey
2010/2015 Associate Professor
Since 2015 Professor
2016/2020 Head of the Institute of Geology and Paleontology, Charles University, Prague
Since 2020 Vice Dean for Geology, Faculty of Science, Charles University, Prague
Teaching: Classes & Field Trips
MG421P31 Introduction to Geology
G420P05 Dynamic Earth: Outstanding Issues of Modern Geology
MG420P10 Plutons, volcanoes, and orogeny through time
MG421T02 Geologic Field Course
MG421T04E Geologic Field Trips
Teaching: Undergraduate & Graduate Students
Supervised 4 bachelor (Bc.), 6 master (diploma), and 2 Ph.D. theses (2 other as co-advisor)
Currently supervising 2 Ph.D. and 1 Bc. projects
Science: Research Interests
Physical Geology, Plate Tectonics, Precambrian Earth
Tectonics of active continental margins and collisional orogens, accretionary wedges, mélanges
Magmatic processes, volcano–plutonic link, volcanology, interactions between magmatism and tectonic deformation
Rock magnetism and its tectonic applications
Detrital zircon geochronology
Science: sponsored research projects as PI
2020/2022 The Urals: a unique natural laboratory of crustal growth and supercontinent assembly (international Czech–Russian project No. 20-05011J)
2019/2021 Late Archean granites: markers of modern-style plate tectonics? (Czech Science Foundation, No. 19-08066S)
2016/2018 Sedimentary record and mechanics of collapse of orogenic belts (Czech Science Foundation, No. 16-11500S)
2012/2014 Calderas as indicators of thermal-mechanical evolution of subvolcanic magma chambers (Czech Science Foundation, No. P210/12/1385)
2011/2013 The origin of compositional and textural zoning in shallow-level granitoid plutons: a quantitative approach (Czech Science Foundation, No. P210/11/1168)
2007/2009 Relationship between faults and plutons: implications for interactions between tectonic and magmatic processes in magmatic arcs and orogenic belts (Czech Science Foundation, No. 205/07/P226)
2004/2006 Processes along internal boundaries in magma chambers and their significance for interpreting rheology, fabric formation and emplacement mechanisms (Grant Agency of the Czech Academy of Sciences, No. KJB3111403)
Science: Field Areas & Geologic Expeditions
Ongoing project in the Superior Province, northeastern Canada
Ongoing project in the Urals, Russia
Other ongoing projects in the Western Carpathians, Eastern Alps, and the Balkans
North American Cordillera (12 field seasons in Sierra Nevada, California, and Blue Mountains, Oregon)
Antarctica and Patagonia (3 expeditions to Antarctic Peninsula and Isla Desolación)
Bohemian Massif (20+ years of continuous field work)
Science: Editorial Service
Since 2006 100+ peer reviews for international journals and edited volumes (e.g., Geology, Geological Society of America Bulletin, Gondwana Research, Journal of Petrology, Lithos, Tectonics, Tectonophysics, Precambrian Research, Lithosphere, Journal of Structural Geology, Journal of Volcanology and Geothermal Research, Geological Magazine, International Journal of Earth Sciences, Geophysical Journal International, Terra Nova, Geoscience Frontiers, Geological Society, London, Special Publications)
Since 2007 Journal of Geosciences, Member of the Editorial board, Guest Editor of 3 special issues
Since 2008 Grant proposal reviews for the National Science Foundation (USA), National Science Centre (Poland), Austrian Science Fund (FWF), Austrian Academy of Sciences (ÖAW), National Fund for Scientific and Technological Development (FONDECYT, Chile), Executive Agency for Higher Education, Research, Development and Innovation Funding (UEFISCDI, Romania)
Science: Original Research Papers in International Journals
Žák J, Svojtka M, Gerdjikov I, Kounov A, Vangelov DA (2021) The Balkan terranes: a missing link between the eastern and western segments of the Avalonian–Cadomian orogenic belt?International Geology Review in press
Roberts NMW, Žák J, Vacek F, Sláma J (2021) No more blind dates with calcite: fluid-flow vs fault-slip along the Očkov thrust, Prague Basin Geoscience Frontiers 12: 101143
Pašava J, Ackerman L, Žák J, Veselovský F, Creaser RA, Svojtka M, Luais B, Pour O, Šebek O, Trubač J, Vosáhlová E, Cividini D (2021) Elemental and isotopic compositions of trench-slope black shales, Bohemian Massif, with implications for oceanic and atmospheric oxygenation in early Cambrian Palaeogeography, Palaeoclimatology, Palaeoecology 564: 110195
Ackerman L, Pašava J, Žák J, Žák K, Kachlík V, Šebek O, Trubač J, Svojtka M, Veselovský F, Strnad L, Santolík V (2021) Arc-related black shales as sedimentary archives of sea-level fluctuations and plate tectonics during the late Neoproterozoic: an example from the Bohemian Massif Marine and Petroleum Geology 123: 104713
Trubač J, Žák J, Kondrová J (2020) Magmatic tempos in large hot orogens in comparison with continental margin arcs Journal of Geology 128: 465–475
Žák J, Svojtka M, Hajná J, Ackerman L (2020) Detrital zircon geochronology and processes in accretionary wedges Earth-Science Reviews 207: 103214
Nádaskay R, Žák J, Sláma J, Sidorinová T, Valečka J (2019) Deciphering the Late Paleozoic to Mesozoic tectonosedimentary evolution of the northern Bohemian Massif from detrital zircon geochronology and heavy mineral provenance International Journal of Earth Sciences 108: 2653–2681
Žák J, Verner K, Ježek J, Trubač J (2019) Complex mid-crustal flow within a growing granite–
migmatite dome: an example from the Variscan belt illustrated by the anisotropy of magnetic susceptibility and fabric modeling Geological Journal 54: 3681–3699
Ackerman L, Hajná J, Žák J, Erban V, Sláma J, Polák L, Kachlík V, Strnad L, Trubač J (2019) Architecture and composition of ocean floor subducted beneath northern Gondwana during Neoproterozoic to Cambrian: a palinspastic reconstruction based on Ocean Plate Stratigraphy (OPS) Gondwana Research 76: 77–97
Hajná J, Žák J, Ackerman L, Svojtka M, Pašava J (2019) A giant late Precambrian chert-bearing olistostrome discovered in the Bohemian Massif: a record of Oceanic Plate Stratigraphy (OPS) disrupted by mass-wasting along an outer trench slope Gondwana Research 74:173–188
Paterson SR, Ardill K, Vernon RH, Žák J (2019) A review of mesoscopic magmatic structures and their potential for evaluating the hypersolidus evolution of intrusive complexes Journal of Structural Geology 125: 997–1016
Tomek F, Vacek F, Žák J, Petronis MS, Verner K, Foucher MS (2019) Polykinematic foreland basins initiated during orthogonal convergence and terminated by orogen-oblique strike-slip faulting: an example from the northeastern Variscan belt Tectonophysics 766: 379–397
Tomek F, Žák J, Svojtka M, Finger F, Waitzinger M (2019) Emplacement dynamics of syn-collapse ring dikes: an example from the Altenberg–Teplice caldera, Bohemian Massif Geological Society of America Bulletin 131: 997–1016
Vacek F, Žák J (2019) A lifetime of the Variscan orogenic plateau from uplift to collapse as recorded by the Prague Basin, Bohemian Massif Geological Magazine 156: 485–509
Hajná J, Žák J, Dörr W, Kachlík V, Sláma J (2018) New constraints from detrital zircon ages on prolonged, multiphase transition from the Cadomian accretionary orogen to a passive margin of Gondwana Precambrian Research 317:159–178
Žák J, Sláma J (2018) How far did the Cadomian ʽterranesʼ travel from Gondwana during Early Paleozoic? A critical reappraisal based on detrital zircon geochronology International Geology Review 60: 313–338
Žák J, Svojtka M, Opluštil S (2018) Topographic inversion and changes in the sediment routing systems in the Variscan orogenic belt as revealed by detrital zircon and monazite U–Pb geochronology in post-collisional continental basins Sedimentary Geology 377: 63–81
Hajná J, Žák J, Dörr W (2017) Time scales and mechanisms of growth of active margins of Gondwana: a model based on detrital zircon ages from the Neoproterozoic to Cambrian Blovice accretionary complex, Bohemian Massif Gondwana Research 42: 63–83
Kabele P, Žák J, Somr M (2017) Finite element modeling of magma chamber–host rock interactions prior to caldera collapse Geophysical Journal International 209: 1851–1865
Tomek F, Žák J, Verner K, Holub FV, Sláma J, Paterson SR, Memeti V (2017) Mineral fabrics in high-level intrusions recording crustal strain and volcano-tectonic interactions: the Shellenbarger pluton, Sierra Nevada, California Journal of the Geological Society, London 174: 193–208
Trubač J, Janoušek V, Žák J, Somr M, Kabele P, Švancara J, Gerdes A, Žáčková E (2017) Origin of reverse compositional and textural zoning in granite plutons by localized thermal overturn of stratified magma chambers Lithos 277:315–336
Žák J, Sláma J, Burjak M (2017) Rapid extensional unroofing of a granite–migmatite dome with relics of high-pressure rocks, the Podolsko complex, Bohemian Massif Geological Magazine 154: 354–380
Žák J, Verner K, Tomek F, Johnson K, Schwartz JJ (2017) Magnetic fabrics of arc plutons reveal a significant Late Jurassic to Early Cretaceous change in the relative plate motions of the Pacific Ocean basin and North America Geosphere 13:11–21
Faryad SW, Žák J (2016) High-pressure granulites of the Podolsko complex, Bohemian Massif: an example of crustal rocks that were subducted to mantle depths and survived a pervasive mid-crustal high-temperature overprint Lithos 246–247: 246–260
Paterson SR, Memeti V, Mundil R, Žák J (2016) Repeated, multiscale, magmatic erosion and recycling in an upper-crustal pluton: implications for magma chamber dynamics and magma volume estimates American Mineralogist 101: 2176–2198
Tomek F, Žák J, Holub FV, Chlupáčová M, Verner K (2016) Growth of intra-caldera lava domes controlled by various modes of caldera collapse, the Štiavnica volcano–plutonic complex, Western Carpathians Journal of Volcanology and Geothermal Research 313: 183–197
Žák J, Verner K, Tomek F, Holub FV, Johnson K, Schwartz JJ (2015) Simultaneous batholith emplacement, terrane/continent collision, and oroclinal bending in the Blue Mountains Province, North American Cordillera Tectonics 34: 1107–1128
Johnson K, Schwartz JJ, Žák J, Verner K, Barnes CG, Walton C, Wooden JL, Wright JE, Kistler RW (2015) Composite Sunrise Butte pluton: insights into Jurassic–Cretaceous collisional tectonics and magmatism in the Blue Mountains Province, northeastern Oregon
Geological Society of America Special Paper 513: 377–398
Tomek F, Žák J, Chadima M (2015) Granitic magma emplacement and deformation during early-orogenic syn-convergent transtension: the Staré Sedlo complex, Bohemian Massif Journal of Geodynamics 87: 50–66
Žák J, Verner K, Janoušek V, Holub FV, Kachlík V, Finger F, Hajná J, Tomek F, Vondrovic L, Trubač J (2014) A plate-kinematic model for the assembly of the Bohemian Massif constrained by structural relations around granitoid plutons Geological Society, London, Special Publications 405: 169–196
Hajná J, Žák J, Kachlík V (2014) Growth of accretionary wedges and pulsed ophiolitic melange formation by successive subduction of trench-parallel volcanic elevations Terra Nova 26: 322–329
Tomek F, Žák J, Chadima M (2014) Magma flow paths and strain patterns in magma chambers growing by floor subsidence: a model based on magnetic fabric study of shallow-level plutons in the Štiavnica volcano–plutonic complex, Western Carpathians Bulletin of Volcanology 76, Article No. 873
Verner K, Žák J, Šrámek J, Paclíková J, Zavřelová A, Machek M, Finger F, Johnson K (2014) Formation of elongated granite–migmatite domes as isostatic accommodation structures in collisional orogens Journal of Geodynamics 73: 100–117
Trubač J, Žák J, Chlupáčová M, Janoušek V (2014) Magnetic fabric and modeled strain distribution in the head of a nested granite diapir, the Melechov pluton, Bohemian Massif Journal of Structural Geology 66: 271–283
Žák J, Verner K, Sláma J, Kachlík V, Chlupáčová M (2013) Multistage magma emplacement and progressive strain accumulation in the Krkonoše–Jizera plutonic complex, Bohemian Massif Tectonics 32: 1493–1512
Žák J, Kraft P, Hajná J (2013) Timing, styles, and kinematics of Cambro–Ordovician extension in the Teplá–Barrandian unit, Bohemian Massif, and its bearing on the opening of the Rheic Ocean International Journal of Earth Sciences 102: 415–433
Hajná J, Žák J, Kachlík V, Dörr W, Gerdes A (2013) Neoproterozoic to early Cambrian Franciscan-type mélanges in the Teplá–Barrandian unit, Bohemian Massif: evidence of modern-style accretionary processes along the Cadomian active margin of Gondwana? Precambrian Research 224: 653–670
Hajná J, Žák J, Kachlík V, Chadima M (2012) Deciphering the Variscan tectonothermal overprint in the Cadomian basement of the Teplá–Barrandian unit, Bohemian Massif International Journal of Earth Sciences 101: 1855–1873
Žák J, Verner K, Johnson K, Schwartz JJ (2012) Magnetic fabric of Late Jurassic arc plutons and kinematics of terrane accretion in the Blue Mountains, northeastern Oregon Gondwana Research 22: 341–352
Žák J, Verner K, Johnson K, Schwartz J (2012) Magma emplacement process zone preserved in the roof of a large Cordilleran batholith, Wallowa Mountains, northeastern Oregon Journal of Volcanology and Geothermal Research 227–228: 61–75
Žák J, Kabele P (2012) A new approach to modeling perpendicular fabrics in porphyritic plutonic rocks using the finite element method International Journal of Earth Sciences 101: 715–730
Žák J, Verner K, Holub F, Kabele P, Chlupáčová M, Halodová P (2012) Magmatic to solid state fabrics in syntectonic granitoids recording early Carboniferous orogenic collapse in the Bohemian Massif Journal of Structural Geology 36: 27–42
Žák J, Soejono I, Janoušek V, 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
Paterson SR, Memeti V, Pignotta G, Erdmann S, Žák J, Chambers J, Ianno A (2012) Formation and transfer of stoped blocks into magma chambers: the high temperature interplay between focused porous flow, cracking, channel flow, host rock anisotropy, and regional deformation Geosphere 8: 443–469
Žák J, Kratinová Z, Trubač J, Janoušek V, Sláma J, Mrlina J (2011) Structure, emplacement, and tectonic setting of Late Devonian granitoid plutons in the Teplá–Barrandian unit, Bohemian Massif International Journal of Earth Sciences 100: 1477–1495
Žák J, Verner K, Finger F, Faryad SW, Chlupáčová M, Veselovský F (2011) The generation of voluminous S-type granites in the Moldanubian unit, Bohemian Massif, by rapid isothermal exhumation of the metapelitic middle crust Lithos 121: 25–40
Hajná J, Žák J, Kachlík V (2011) Structure and stratigraphy of the Teplá–Barrandian Neoproterozoic, Bohemian Massif: a new plate-tectonic reinterpretation Gondwana Research 19: 495–508
Žák J, Paterson SR (2010) Magmatic erosion of the solidification front during reintrusion: the eastern margin of the Tuolumne batholith, Sierra Nevada, California International Journal of Earth Sciences 99: 801–812
Žák J, Hrouda F, Holub FV (2010) Plane-confined magnetic lineations in mingled mafic and felsic magmas, the Sázava pluton, Bohemian Massif Journal of Volcanology and Geothermal Research 190: 312–324
Hajná J, Žák J, Kachlík V, Chadima M (2010) Subduction-driven shortening and differential exhumation in a Cadomian accretionary wedge: the Teplá–Barrandian unit, Bohemian Massif Precambrian Research 176: 27–45
Janoušek V, Wiegand B, Žák J (2010) Dating the onset of Variscan crustal exhumation in the core of the Bohemian Massif: new U-Pb single zircon ages from the high-K calc-alkaline granodiorites of the Blatná suite, Central Bohemian Plutonic Complex Journal of the Geological Society, London 167: 347–360
Economos RC, Paterson SR, Erdmann S, Miller J, Memeti V, Žák J (2010) Causes of compositional diversity in a lobe of the Half Dome Granodiorite, Tuolumne Batholith, central Sierra Nevada, California Earth and Environmental Science Transactions of the Royal Society of Edinburgh 100: 173–183
Žák J, Paterson SR, Janoušek V, Kabele P (2009) The Mammoth Peak sheeted complex, Tuolumne batholith, Sierra Nevada, California: a record of initial growth or late thermal contraction in a magma chamber? Contributions to Mineralogy and Petrology 157: 447–470
Žák J, Dragoun F, Verner K, Chlupáčová M, Holub FV, Kachlík V (2009) Forearc deformation and strain partitioning during growth of a continental magmatic arc: the northwestern margin of the Central Bohemian Plutonic Complex, Bohemian Massif Tectonophysics 469: 93–111
Žák J, Verner K, Klomínský J, Chlupáčová M (2009) "Granite tectonics" revisited: insights from comparison of K-feldspar shape-fabric, anisotropy of magnetic susceptibility (AMS), and brittle fractures in the Jizera granite, Bohemian Massif International Journal of Earth Sciences 98: 949–967
Verner K, Žák J, Pertoldová J, Šrámek J, Sedlák J, Trubač J, Týcová P (2009) Magmatic history and geophysical signature of a post-collisional intrusive centre emplaced near a crustal-scale shear zone: the Plechý granite pluton (Moldanubian batholith, Bohemian Massif International Journal of Earth Sciences 98: 517–532
Trubač J, Žák J, Chlupáčová M, Janoušek V (2009) Magnetic fabric of the Říčany granite, Bohemian Massif: a record of helical magma flow? Journal of Volcanology and Geothermal Research 181: 25–34
Žák J, Verner K, Týcová P (2008) Grain-scale processes in actively deforming magma mushes: new insights from electron backscatter diffraction (EBSD) analysis of biotite schlieren in the Jizera granite, Bohemian Massif Lithos 106: 309–322
Žák J, Verner K, Týcová P (2008) Multiple magmatic fabrics in plutons: an overlooked tool for exploring interactions between magmatic processes and regional deformation? Geological Magazine 145: 537–551
Paterson SR, Žák J, Janoušek V (2008) Growth of complex sheeted zones during recycling of older magmatic units into younger: Sawmill Canyon area, Tuolumne batholith, Sierra Nevada, California Journal of Volcanology and Geothermal Research 177: 457–484
Verner K, Žák J, Nahodilová R, Holub FV (2008) Magmatic fabrics and emplacement of the cone-sheet-bearing Knížecí Stolec durbachite pluton (Moldanubian Unit, Bohemian Massif): implications for mid-crustal reworking of granulitic lower crust in the Central European Variscides International Journal of Earth Sciences 97: 19–33
Žák J, Klomínský J (2007) Magmatic structures in the Krkonoše–Jizera Plutonic Complex, Bohemian Massif: evidence for localized multiphase flow and small-scale thermal-mechanical instabilities in a granitic magma chamber Journal of Volcanology and Geothermal Research 164: 254–267
Žák J, Paterson SR, Memeti V (2007) Four magmatic fabrics in the Tuolumne batholith, Sierra Nevada, California (USA): implications for interpreting fabric patterns in plutons and evolution of magma chambers in the upper crust Geological Society of America Bulletin 119: 184–201
Žák J, Vyhnálek B, Kabele P (2006) Is there a relationship between magmatic fabrics and brittle fractures in plutons? A view based on structural analysis, anisotropy of magnetic susceptibility and thermo-mechanical modelling of the Tanvald pluton (Bohemian Massif) Physics of the Earth and Planetary Interiors 157: 286–310
Žák J, Holub FV, Kachlík V (2006) Magmatic stoping as an important emplacement mechanism of Variscan plutons: evidence from roof pendants in the Central Bohemian Plutonic Complex (Bohemian Massif) International Journal of Earth Sciences 95: 771–789
Žák J, Paterson SR (2006) Roof and walls of the Red Mountain Creek pluton, eastern Sierra Nevada, California (USA): implications for process zones during pluton emplacement Journal of Structural Geology 28: 575–587
Verner K, Žák J, Hrouda F, Holub F (2006) Magma emplacement during exhumation of lower- to mid-crustal orogenic root: the Jihlava syenitoid pluton, moldanubian Unit, Bohemian Massif Journal of Structural Geology 28: 1553–1567
Žák J, Paterson SR (2005) Characteristics of internal contacts in the Tuolumne Batholith, central Sierra Nevada, California (USA): implications for episodic emplacement and physical processes in a continental arc magma chamber Geological Society of America Bulletin 117: 1242–1255
Žák J, Holub FV, Verner K (2005) Tectonic evolution of a continental magmatic arc from transpression in the upper crust to exhumation of mid-crustal orogenic root recorded by episodically emplaced plutons: the Central Bohemian Plutonic Complex (Bohemian Massif) International Journal of Earth Sciences 94: 385–400
Žák J, Schulmann K, Hrouda F (2005) Multiple magmatic fabrics in the Sázava pluton (Bohemian Massif, Czech Republic): a result of superposition of wrench-dominated regional transpression on final emplacement Journal of Structural Geology 27: 805–822
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