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Jiří Žák

Contact Information 

Address: Albertov 6, Prague, 12843, office P16B

Email: jirizak@natur.cuni.cz

Phone: +420 221951475 

Whois:  http://is.cuni.cz/webapps/id/1140954593446060

Research websites: Continental Tectonics Group ResearchGate  ScopusID ORCID GoogleScholar ResearcherID 

CV & Professional Career

1976 Born in Plzeň (Pilsen), The Capital of Beer

1997 Bachelor in Geology, Charles University, Prague

1997/1998 Study stay at Royal School of MInes, Imperial College, London

2000 Graduated from Charles University in Petrology and Structural Geology

Since 2002 Appointed at the Institute of Geology and Paleontology, Charles University, Prague

2004 Ph.D. in Geological Sciences, Charles University, Prague

2004/2009 Research Geologist at the Czech Geological Survey (part-time)

2010/2015 Associate Professor

2015 Full 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

Awards

2006 Faculty of Science Dean´s Award for research and teaching excellence

2010 Radek Melka Prize for the best paper, Central European Tectonic Studies Group

2010 Giant Salamander students´ award for teaching excellence

2021 Radim Kettner Award for the best paper

Teaching & Students

MG421P00 Physical GeologyMG421P31 Introduction to GeologyG420P05 Dynamic Earth: Outstanding Issues of Modern GeologyMG420P10 Plutons, volcanoes, and orogeny through timeMG421T02 Geologic Field CourseG421T04 Geologic Field TripsMG421T04E Geologic Field Trips

Since 2005 supervised 2 doctoral, 6 master, and 5 bachelor theses

Research Interests

Physical geology, plate tectonics, Precambrian Earth, tectonics of active continental margins and collisional orogens, accretionary wedges, mélanges, magmatic processes, interactions between magmatism and tectonic deformation, rock magnetism and its tectonic applications, detrital zircon geochronology

Field Areas & Geological Expeditions

Bohemian Massif (25+ years of continuous field work), ongoing projects in the Balkans, Eastern Alps, and Western Carpathians, Superior Province, northeastern Canada (3 field seasons in Québec and Manitoba), 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)

Sponsored research projects as PI and co-PI

2020/2023 Cherts and carbonates as geochemical proxies of paleoenvironmental conditions and Ocean Plate Stratigraphy, Czech Science Foundation, project No. 20-13644S

2019/2022 Late Archean granites: markers of modern-style plate tectonics? Czech Science Foundation, project No. 19-08066S

2017/2019 Black shale formations as geochemical markers of paleoenvironmental changes and tectonic setting along active continental margins, Czech Science Foundation, project No. 17-15700S

2016/2018 Sedimentary record and mechanics of collapse of orogenic belts, Czech Science Foundation, project No. 16-11500S

2012/2014 Calderas as indicators of thermal-mechanical evolution of subvolcanic magma                       chambers, Czech Science Foundation, project No. P210/12/1385

2011/2013 The origin of compositional and textural zoning in shallow-level granitoid                         plutons: a quantitative approach, Czech Science Foundation, project 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, project No. 205/07/P226

2007/2009 Fabric patterns of granite diapirs in static and dynamic conditions: integrated analogue, field, and numerical approaches, Grant Agency of the Czech Academy of Sciences, project No. KJB300120702

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, project No. KJB3111403

Peer Reviews & Editorial Work 

Since 2006 130+ peer reviews for international journals and edited volumes (e.g., Geology, Geological Society of America Bulletin, Gondwana Research, Journal of the Geological Society, 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 2008 Grant proposal reviews for the National Science Foundation (USA), National Science Centre (Poland), Swiss National Science Foundation (SNSF), 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), Slovak Academic and Scientific Programme (SASPRO), Dutch Research Council (NWO)

Original Research Papers in International Journals

2023/ in press

Ackerman L, Žák J, Kachlík V, Pašava J, Žák K, Pack A, Veselovský F, Strnad L (2023) The significance of cherts as markers of Ocean Plate Stratigraphy and paleoenvironmental conditions: New insights from the Neoproterozoic–Cambrian Blovice accretionary wedge, Bohemian Massif Geoscience Frontiers 14: 101478

2022

Žák J, Svojtka M, Gerdjikov I, Kounov A, Vangelov DA (2022) The Balkan terranes: a missing link between the eastern and western segments of the Avalonian–Cadomian orogenic belt? International Geology Review 64: 2389–2415

Syahputra R, Žák J, Nance RD (2022) Cambrian sedimentary basins of northern Gondwana as geodynamic markers of incipient opening of the Rheic Ocean Gondwana Research 105: 492–513

Finger F, Schiller D, Lindner M, Hauzenberger C, Verner K, Žák J (2022) Ultrahigh-temperature granites and a curious thermal eye in the post-collisional South Bohemian batholith of the Variscan orogenic belt (Europe) Geology 50: 542–546

Ackerman L, Žák J, Žák K, Pašava J, Kachlík V, Hora J, Veselovský F, Hajná J (2022) Carbon, oxygen, and strontium isotopic fingerprint in Neoproterozoic to early Cambrian limestones in an active margin setting: a record of local environment or global changes? Precambrian Research 370: 106538

Ackerman L, Žák J, Kachlík V, Svojtka M, Tomek F, Santolík V, Sláma J, Trubač J, Strnad L, Vacek F (2022) The diversity of sources of late Archean granites reflects a transition from plume-dominated to plate tectonics in the Superior Province, Canada Precambrian Research 370: 106525

2021

Žák J, Tomek F, Svojtka M, Vacek F, Kachlík V, Ackerman L, Ježek J, Petronis MS (2021) Distributed crustal shortening followed by transpressional shearing in the Superior Province, northeastern Canada: a Late Archean analogy to modern accretionary plate margins? Precambrian Research 362: 106322

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

2020

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

2019

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

2018

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

2017

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

2016

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

2015

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

2014

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

2013

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

2012

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

2011

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

2010

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

2009

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

2008

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

2007

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

2006

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

2005

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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