RNDr. Jiří Žák, Ph.D.
Structural Geology, Tectonics, Magmatic Processes

Phone: +420 221951475  Office: P16 D
E-mail: jirizak@natur.cuni.cz
Personal web: http://www.natur.cuni.cz/~jirizak

Professional Experience

Education

Research Interests

• Structural geology, tectonics, magmatic processes
• Pluton emplacement processes
• Interpretation of fabric patterns in plutons
• Rock magnetism and AMS
• Brittle tectonics

Teaching

• Introduction to Geology
• Methods of Geological Research
• Magmatic Systems
• Brittle Tecto
• Tectonic Seminar
• Geologic Field Trips

Current Research Activities

• Relationship between faults and plutons: implications for interactions between tectonic and magmatic processes in magmatic arcs and orogenic belts (funded by post-doctoral grant of the Grant Agency of the Czech Republic No. 205/07/P226 to Jiří Žák, 2007 - 2009)
• Pre-Variscan and Variscan tectonometamorphic evolution and magmatism of the Krkonoše-Jizera Crystalline Unit (funded by grant of the Grant Agency of the Czech Republic No. 205/07/0783 to Václav Kachlík, 2007 - 2009)
• Fabric patterns of granite diapirs in static and dynamic conditions: integrated analogue, field, and numerical approaches (funded by grant of the Grant Agency of the Czech Academy of Sciences No. KJB300120702 to Zuzana Kratinová, 2007 - 2009)
• Processes along internal boundaries in magma chambers and their significance for interpreting rheology, fabric formation and emplacement mechanisms (funded by grant of the Grant Agency of the Czech Academy of Sciences No. KJB3111403 to Jiří Žák, 2004 - 2006)
• Relationship between magmatic fabrics and fracture networks in plutons (funded by the Czech Geological Survey Research Project No. 3238 to Jiří Žák, 2005)
• Emplacement and geodynamic setting of durbachitic plutons in the Bohemian Massif (funded by the Czech Geological Survey research project No. 3233 and by grant of the Grant Agency of Charles University No. 271/2005/B-GEO/PrF to Kryštof Verner, 2004 - 2006)

Professional Affiliations

Selected Publications

Žák J, Paterson SR, Memeti V (2007): Four magmatic fabrics in the Tuolumne batholith, central 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

Verner K, Žák J, Nahodilová R, Holub FV (2007): 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, in press

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

Paterson SR, Vernon RH, Žák J (2005): Mechanical instabilities and physical accumulation of K-feldspar megacrysts in granitic magma, Tuolumne Batholith, California, USA. JOURNAL OF THE VIRTUAL EXPLORER 18: Electronic Edition, General Contributions 2005, Paper 1.

Paterson SR, Onezime J, Teruya L, Žák J (2003): Quadruple-pronged enclaves: their significance for the interpretation of multiple magmatic fabrics in plutons. JOURNAL OF THE VIRTUAL EXPLORER 10: Electronic Edition, General Contributions 2003, Paper 2.