RESEARCH & DEVELOPMENT

Because AGICO's customers are almost exclusively universities and other scientific institutions, it is useful not only to do engineering work in developing instruments, but also to pursue research into rock magnetism in order to know, in detail, the nature of the work and problems tackled by the scientific community. Thus, AGICO has its own group of scientists who analyze instrumental problems under consideration, suggest measuring principles for new or improved instruments, develop measuring methods and software for data processing and publish scientific papers and case histories in international scientific papers. They routinely present papers on scientific symposia and conferences to illustrate the possible uses of the individual instruments to solve various geophysical and geological problems. We have gained a world-wide reputation through our results published on magnetic anisotropy (susceptibility anisotropy, high field magnetic anisotropy, remanence anisotropy).

In the early sixties, AGICO developed a Spinner Magnetometer for measuring remanent magnetization of even weakly magnetic rocks (Jelinek, 1966). Its sensitivity and accuracy put it far ahead of the competition, and subsequent developments have always made it the highest performance Spinner Magnetometer. Its sensitivity is limited only by the thermal noise of the pick-up coils. Continuous improvements in electronics, mechanical engineering and finally software engineering and interfacing took place through the sequence of instruments: versions JR-2 (Jelinek), JR-3 (Jelinek), JR-4 (Hulka-Jelinek), JR-5A/JR-5 (Pokorny-Jelinek-Suza), finally resulting in the JR-6A/JR-6 dual speed spinner magnetometers (Pokorny-Suza), with lower rotation speed enabling measurement of soft and fragile specimens while preserving the top sensitivity on higher rotation speed.

Our second most important instrument is the Kappabridge system for measuring magnetic susceptibility and anisotropy of susceptibility. Even the first version (KLY-1, Jelinek, 1973) was so sensitive and accurate that very weakly magnetic (even diamagnetic) rocks could be measured. The second version (KLY-2, Jelinek, 1980) was once the most frequently used instrument in the world to investigate the magnetic anisotropy of weakly magnetic and weakly anisotropic rocks. The third version (KLY-3S, Jelinek-Pokorny, 1997), utilizes a slowly spinning specimen, to enhance sensitivity and reduce measurement time to two minutes. The fourth version (KLY-4S/KLY-4, Pokorny-Suza-Hrouda, 2004) enables the susceptibility and its anisotropy to be measured in various weak magnetic fields. The measurement of bulk susceptibility variation with field is fully automated. The most recent version, MFK1-FA Multi-Function Kappabridge (Pokorny et al., 2005) works at three operating frequencies and enables the susceptibility and its anisotropy to be measured also in various weak magnetic fields. The bulk susceptibility measurement at three different frequencies is particularly useful in environmental magnetism studies.

The CS-3 furnace apparatus (Pokorny-Suza) has been designed to measure the temperature variation of magnetic susceptibility from the room temperature to 700 degrees centigrade, in unison with the Kappabridge. In weakly magnetic specimens the thermomagnetic curve can be resolved into paramagnetic hyperbola and complex "ferro"magnetic response curve. In this way, the contributions of paramagnetic and ferromagnetic sensu lato minerals to rock susceptibility can be assessed quantitatively. The CS-L cryostat apparatus (Pokorny-Suza-Silinger) allows measurement of the temperature variation of magnetic susceptibility at low temperatures ranging from liquid nitrogen temperature to room temperature in unison with the Kappabridge and CS-3 Furnace Apparatus.

The LDA-3 AF Demagnetizer (Sapik-Suza) demagnetizes a specimen by alternating magnetic field. The demagnetization process is microprocessor-controlled and automated. Equipped with the AMU-1 Anhysteretic Magnetizer option, it also enables a rock specimen to be magnetized anhysteretically when required.

To provide our customers with user-friendly software for measurement and for advanced data processing we develop corresponding software both for palaeomagnetism and magnetic anisotropy. See Software Support for details.

Bartosek, J. & Jelinek, V., 1961. Portable instrument for measuring magnetic susceptibility of rocks in situ (kappa-meter) (in Czech). Geol. pruzkum., 374-376. Praha.

Jelinek, V., 1966. A high sensitivity spinner magnetometer. Studia geophys. geod., 10, 58-77.

Jelinek, V., 1973. Precision A.C. bridge set for measuring magnetic susceptibility of rocks and its anisotropy. Studia geophys. geod., 17, 36-48.

Jelinek, V. & Pokorny, J., 1997. Some new concepts in technology of transformer bridges for measuring susceptibility anisotropy of rocks. Phys. Chem. Earth, 22, 179-181.

Parma, J., 1988. An automated torque meter for rapid measurement of high-field magnetic anisotropy of rocks. Phys. Earth Planet.Inter., 51, 387-389.

Pokorny, J., Suza, P. and Hrouda, F., 2004. Anisotropy of magnetic susceptibility of rocks measured in variable weak magnetic fields using the KLY-4S Kappabridge, 69-76. Magnetic Fabric: Methods and Applications, F. Martin-Hernandez, C.M. Luneburg, C. Aubourg & M. Jackson (eds), Geological Society, London, Special Publications, 238.

Chadima, M., Gunther, A., Hirt, A.M., Hrouda, F. and Siemes, H., 2004. Phyllosilicate preferred orientation as a control of magnetic fabric: evidence from neutron texture goniometry and low and high-field magnetic anisotropy (SE Rhenohercynian Zone of Bohemian Massif), 361-380. Magnetic Fabric: Methods and Applications, F. Martin-Hernandez, C.M. Luneburg, C. Aubourg & M. Jackson (eds), Geological Society, London, Special Publications, 238.

Hrouda, F., 1973. A determination of the symmetry of the ferromagnetic mineral fabric in rocks on the basis of the magnetic susceptibility anisotropy measurements. Gerl. Beitr. Geophys., 82, 390-396.

Hrouda, F., 1980. Magnetocrystalline anisotropy of rocks and massive ores: a mathematical model study and its fabric implications. J. Struct. Geol., 2, 459-462.

Hrouda, F., Stephenson, A. & Woltar, L., 1983. On the standardization of measurements of the anisotropy of magnetic susceptibility. Phys. Earth Planet. Inter., 32, 203-208.

Hrouda, F., Siemes, H., Herres, N. & Hennig-Michaeli, C., 1985. The relation between the magnetic anisotropy and the c-axis fabric in a massive hematite ore. Jour. Geophys., 56, 174-182.

Hrouda, F., 1986. The effect of quartz on the magnetic anisotropy of quartzite. Studia geophys. geod., 30, 39-45.

Hrouda, F., 1987. Mathematical model relationship between the paramagnetic anisotropy and strain in slates. Tectonophysics, 142, 323-327.

Henry, B. & Hrouda, F., 1989. Analyse de la deformation finie des roches par determination de leur anisotropie de susceptibilite magnetique. C.R. Acad. Sci. Paris, s. II, 308, 31-737.

Hrouda, F. and Schulmann, K., 1990. Conversion of magnetic susceptibility tensor into orientation tensor in some rocks. Phys. Earth Planet. Inter., 63, 71-77.

Hrouda, F. & Bartoskova, L., 1990. On the detection of weak bedding parallel strain by magnetic anisotropy: a mathematical model study. Studia Geophys. Geod., 34, 327-341.

Hrouda, F. & Jelinek, V., 1990. Resolution of ferromagnetic and paramagnetic anisotropies, using combined low-field and high-field measurements. Geophys. Jour., 103, 75-84.

Hrouda, F., 1992. Separation of a component of tectonic deformation from a complex magnetic fabric. Jour. Struct. Geol., 14, 1992, 65-71.

Hrouda, F., 1993. Theoretical models of magnetic anisotropy to strain relationship revisited. Phys. Earth Planet. Inter., 77, 237-249.

Hrouda, F., 1994. A technique for the measurement of thermal changes of magnetic susceptibility of weakly magnetic rocks by the CS-2 apparatus and KLY-2 Kappabridge. Geophys. J. Int., 118, 604-612.

Hrouda, F., 1994. Mathematical modelling of the behaviour of passive fabric elements (and corresponding AMS) in the transpression zone, 381-392. Textures of geological materials, H.J. Bunge, S. Siegesmund, W.Skrotzki, K. Weber (eds.), DGM Verlag Oberursel.

Hrouda, F. and Henry, B., 1996. Mathematical modelling of factors affecting the regression line method for separation of ferromagnetic AMS from total rock AMS. Acta Univ.Carol., Geologica, 40, 3-12.

Hrouda, F., Jelinek, V. and Zapletal, K., 1997. Refined technique for susceptibility resolution into ferromagnetic and paramagnetic components based on susceptibility temperature-variation measurement. Geophys. J. Int., 129, 715-719.

Hrouda, F., Hanak, J. and Terzijski, I., 1999. Pore fabrics of ceramic models investigated by magnetic anisotropy. Phys. Chem. Earth (A), 24, 607-610.

Hrouda, F. and Jezek, J., 1999. Theoretical models for the relationship between magnetic anisotropy and strain: effect of triaxial magnetic grains. Tectonophysics, 301, 183-190.

Hrouda, F., Henry, B. and Borradaile, G., 2000. Limitations of tensor subtraction in isolating diamagnetic fabrics by magnetic anisotropy. Tectonophysics, 322, 303-310.

Hrouda, F., Hanak, J. and Terzijski, I., 2000. The magnetic and pore fabrics of extruded and pressed ceramic models. Geophys. J. Int., 142, 941-947.

Hrouda, F., 2002. The use of the anisotropy of magnetic remanence in the resolution of the anisotropy of magnetic susceptibility into its ferromagnetic and paramagnetic components. Tectonophysics, 347, 269-281.

Hrouda, F., 2002. Low-field variation of magnetic susceptibility and its effect on the anisotropy of magnetic susceptibility of rocks. Geophys. J. Int., 150, 1-9.

Hrouda, F., 2003. Indices for numerical characterization of the alteration processes of magnetic minerals taking place during investigation of temperature variation of magnetic susceptibility. Stud. Geophys. Geod., 47, 847-861.

Hrouda, F., 2004. Problems in interpreting AMS parameters in diamagnetic rocks, 49-59. Magnetic Fabric: Methods and Applications, F. Martin-Hernandez, C.M. Luneburg, C. Aubourg & M. Jackson (eds), Geological Society, London, Special Publications, 238.

Hrouda, F., Chlupacova, M. and Mrazova, S., 2006. Low-field variation of magnetic susceptibility as a tool for magnetic mineralogy of rocks. Phys. Earth Sci. Inter., 154, 323-336.

Hrouda, F., Chlupacova, M. and Pokorny, J., 2006. Low-field variation of magnetic susceptibility measured by the KLY-4S Kappabridge and KLF-4A Magnetic Susceptibility Meter: Accuracy and interpretational programme. Stud. Geophys. Geod., 50, 283-298.

Hrouda, F., 2007. Anisotropy of magnetic susceptibility of rocks in the Rayleigh Law region: modelling errors arising from linear fit to non-linear data. Studia Geophys. Geod., 51, 423-438.

Jelinek, V., 1977. The statistical theory of measuring anisotropy of magnetic susceptibility of rocks and its application. Geofyzika, s.p. Brno.

Jelinek, V., 1978. Statistical processing of anisotropy of magnetic susceptibility measured on groups of specimens. Studia geoph. geod., 22, 50-62.

Jelinek, V., 1981. Characterization of the magnetic fabric of rocks. Tectonophysics, 79, T63-T67.

Jelinek, V., 1984. On a mixed quadratic invariant of the magnetic susceptibility tensor. J. Geophys., 56, 58-60.

Jelinek, V., 1985. The physical principles of measuring magnetic anisotropy with the torque magnetometer. Travaux Geophys., 33, 177-198.

Jelinek, V., 1988. Potential energy density tensor and magnetic anisotropy problems. Phys. Earth Planet. Inter., 51, 361-364.

Jelinek, V., Hrouda, F. & Tarling, D.H., 1994. New parameters for characterization of fabrics of linear and planar elements using orientation tensor, 393-399. Textures of Geological Materials, H.J. Bunge, S. Siegesmund, W. Skrotzki, K. Weber (eds.) DGM Verlag, Oberursel.

Jelinek, V., 1996. Theory and measurement of the anisotropy of isothermal remanent magnetization of rocks. Travaux Geophys. 37, 124-134.

Jezek, J. and Hrouda, F., 2000. The Relationship Between the Lisle Orientation Tensor and the Susceptibility tensor. Phys. Chem. Earth (A), 25, 2000, 469-474.

Jezek, J. and Hrouda, F., 2002. Software for modeling the magnetic anisotropy of strained rocks. Computers & Geosciences 28, 1061-1068.

Jezek, J. and Hrouda, F., 2002. A technique for numerical modeling of magnetic anisotropy to strain relationship. Phys. Chem. Earth 27, 1247-1252.

Jezek, J. and Hrouda, F., 2004. Determination of the orientation of magnetic minerals from the anisotropy of magnetic susceptibility, 9-20. Magnetic Fabric: Methods and Applications, F. Martin-Hernandez, C.M. Luneburg, C. Aubourg & M. Jackson (eds), Geological Society, London, Special Publications, 238.

Jezek, J. and Hrouda, F., 2007. SUSIE: a program for inverse strain estimation from magnetic susceptibility. Computers & Geosciences, 33, 749-759.

Tarling, D.H. & Hrouda, F., 1993. The magnetic anisotropy of rocks. Chapman & Hall, London, 217 pp.

Zapletal, K., 1969. Connection of some magnetic properties with the phase composition of natural pyrrhotites. Studia Geophys. Geodaet., 13, 191-198.

Zapletal, K., 1972. On the magnetic phases of natural pyrrhotites. Studia Geophys. Geodaet., 16, 167-176.

Zapletal, K., 1977. Mossbauer spectra of magnetites from serpentinites. In: D. Barb and D. Tarina (Editors), Proc. Int. Conf. Mossbauer spectroscopy, University of Bucharest, pp.317-318.

Zapletal, K., 1985. Magnetic anisotropy of polycrystalline haematite induced by a D.C. magnetic field. Studia Geophys. Geodaet., 29, 351-361.

Zapletal, K., 1990. Low-field susceptibility anisotropy of some biotite crystals. Phys. Earth Planet. Inter., 63, 85-97.

Zapletal, K., 1992. Self-reversal of isothermal remanent magnetization in a pyrrhotite (Fe7S8) crystal. Phys. Earth Planet. Inter., 70, 302-311.

Zapletal, K., 1993. Effect of intergrowths of the ferrimagnetic and antiferromagnetic phases on the rock magnetic properties of natural pyrrhotites. Phys. Earth Planet. Inter., 70, 151-162.

Chadima, M., Hrouda F. and Melichar, R., 2006. Magnetic fabric study of the SE Rhenohercynian Zone (Bohemian Massif): Implications for dynamics of the Paleozoic accretionary wedge. Tectonophysics, 418, 93-109.

Chlupacova, M., Hrouda, F., Janak, F. & Rejl, L., 1975. The fabric, genesis, and relative-age relationship of the granitic rocks of the cista - Jesenice massif, as studied by magnetic anisotropy. Gerl. Beitr. Geophys., 84, 487-500.

Dvorak, J. & Hrouda, F., 1972. The origin of tectonic structures in weakly metamorphosed sediments, as studied by magnetic anisotropy. N. Jb. Geol. Palaeontol. Mh., Jg., 703-712.

Dvorak, J. & Hrouda, F., 1975. The reflection of the deeper structure of the Artmanov - Osoblaha block (Nizky Jesenik Mountains, Czechoslovakia) in magnetic anisotropy and deformation history of overlying Palaeozoic sediments. Vest. ustr. ust. geol., 50, 285-296.

Ellwood, B.B., Chrzanowski, T.H., Hrouda, F., Long, G.J. & Buhl, M.L., 1988. Siderite formation in anoxic deep-sea sediments: A synergic bacterially controlled process with important implications in paleomagnetism. Geology, 16, 980-982.

Friedrich, D., Hrouda, F. & Chlupacova, M., 1995. Relationship between paramagnetic and ferrimagnetic anisotropies in selected specimens of the KTB pilot borehole and its vicinity (German part of the Bohemian massif). Sci. Drilling, 5, 3-15.

Gregorova, D., Hrouda, F. and Kohut, M., 2003. Magnetic susceptibility and geochemistry of Variscan West Carpathian granites: implications for tectonic setting. Phys. Chem. Earth 28, 729-734.

Hrouda, F., Janak, J. & Stelcl, J., 1970. Ueber die Verwendbarkeit der Anisotropie der magnetischen Suszeptibilitaet zur Bestimmung der Magnetitorientierung, 253-262. Experimental and natural rock deformation, P. Paulitsch (editor), Springer Verlag Berlin.

Hrouda, F., 1979. Magnetic anisotropy and plastic deformation in metamorphic rocks, 271-275. Geodynamic Investigations in Czechoslovakia, J. Vanek, V. Babuska and J.Plancar (eds.), Veda Bratislava.

Hrouda, F., 1993. Magnetic fabric relationship between crystalline and Variscan sedimentary complexes in Eastern Bohemian Massif, 227-240. Rhenohercynian and Subvariscan Fold Belts, R.A. Gayer, R.O. Greiling and A.K. Vogel (eds.). Vieweg & Sohn, Braunschweig/ Wiesbaden.

Hrouda, F., Janak, J. & Stelcl, J., 1968. Zur petrophysikalischen Charakteristik einiger Granodiorite des Brunner Massivs. Gerl. Beitr. Geophys., 77, 473-486.

Hrouda, F., 1970. The relation between the fabric and anisotropy of magnetic susceptibility for some West Moravian gneisses. Vest. ustr. ust. geol., 45, 147-156.

Hrouda F., Janak F., Rejl L. & Weiss J., 1971. The use of magnetic susceptibility anisotropy for estimating the ferromagnetic mineral fabrics of metamorphic rocks. Geol. Rdsch., 60, 1124-1142.

Hrouda, F. & Janak, F., 1971. A study of the hematite fabric of some red sediments on the basis of their magnetic susceptibility anisotropy. Sediment. Geol., 6, 187-199.

Hrouda, F., 1971. The magnetite fabric of some massive and mylonitized granodiorites of the most northern part of the Brno massif. cas. Miner. Geol., 16, 37-45.

Hrouda, F., Chlupacova, M. & Rejl, L., 1971. The mimetic fabric of magnetite in some foliated granodiorites, as indicated by magnetic anisotropy. Earth Sci. Planet. Inter., 11, 381-384.

Hrouda, F., Chlupacova, M. & Rejl, L., 1972. Changes in the magnetite content and magnetite fabric during fenitization, as investigated by petromagnetic methods. N. Jb. Miner. Abh., 117, 61-72.

Hrouda, F. & Janak, F., 1976. The changes in shape of the magnetic susceptibility ellipsoid during progressive metamorphism and deformation. Tectonophysiscs, 34, 135-148.

Hrouda, F., 1976. The origin of cleavage in the light of magnetic anisotropy investigations. Phys. Earth Planet. Inter., 13, 132-142.

Hrouda, F., 1976. A model for the orientation process of ferromagnetic minerals in slates. Earth Planet. Sci. Lett., 33, 107-110.

Hrouda, F., Janak, F. & Rejl, L., 1978. Magnetic anisotropy and ductile deformation of rocks in zones of progressive regional metamorphism. Gerl. Beitr. Geophys., 87, 126-134.

Hrouda, F., 1978. The magnetic fabric in some folds. Phys. Earth Planet. Inter., 17, 89-97.

Hrouda, F., 1979. The strain interpretation of the magnetic anisotropy in rocks of the Nizky Jesenik Mountains (Czechoslovakia). Sbor. geol. Ved, rada UG, 16, 27-62.

Hrouda, F. & Chlupacova, M., 1980. The magnetic fabric in the Nasavrky massif. cas. Miner. Geol., 25, 17-27.

Hrouda, F., 1981. On the superposition of regional slaty cleavage on folded strata and its reflection in magnetic anisotropy. cas. miner. geol., 26, 341-348.

Hrouda, F. & Rejl, L., 1982. The small-scale magnetic susceptibility distribution in some plutonic rocks and its geological implications. Vest. ustr. ust. Geol., 57, 65-70.

Hrouda, F., 1982. Magnetic fabric changes during progressive metamorphism and deformation of flysch sediments. Mitt. Geol. Inst. ETH and Univ. Zurich, Neue Folge 239a, 136-139.

Hrouda, F., Kahan, S. & Putis, M., 1983. The magnetic and mesoscopic fabrics of the crystalline complex of the Strazovske vrchy Mts. and their tectonic implications. Geologica Carpathica, 34, 717-731.

Hrouda, F., 1985. The magnetic fabric in the Brno massif. Sbor. geol. Ved, rada UG, 19, 89-112.

Hrouda, F. & Stranik, Z., 1985. The magnetic fabric of the zdanice thrust sheet of the Flysch Belt of the West Carpathians: sedimentological and tectonic implications. Sedim. Geol., 45, 125-145.

Hrouda, F., 1986. The magnetic fabric of sedimentary rocks of the Male Karpaty Mts. and its tectonic implications. Sbor. geol. Ved, rada UG, 20, 165-167.

Hrouda, F., Jacko, S. & Hanak, J., 1988. Parallel magnetic fabrics in metamorphic, granitoid and sedimentary rocks of the Branisko and cierna Hora Mountains (E Slovakia) and their tectonometamorphic control. Phys. Earth Planet. Inter., 51, 271-289.

Hrouda, F. and Lanza, R., 1989. Magnetic fabric in the Biella and Traversella stocks (Periadriatic Line): implications for the emplacement mode. Phys. Earth Planet. Inter., 56, 337-348.

Hrouda, F. & Hanak, J., 1990. Magnetic fabric of sedimentary formations of the Strazovske vrchy Mts., sedimentological and tectonic implications. Sbor. geol. Ved, rada UG, 24, 91-105.

Hrouda, F., 1990. Variscan tectonic overprinting the magnetic fabric in the sedimentary and crystalline nappes in the NE Bohemian Massif. Tectonics, 12, 507-518.

Hrouda, F., 1991. Models of magnetic anisotropy variation in sedimentary sheets. Tectonophysics, 186, 203-210.

Hrouda, F. & Kahan, S., 1991. The magnetic fabric relationship between sedimentary and basement nappes in the High Tatra Mts. (N Slovakia). J. Struct. Geol., 13, 431-442.

Hrouda, F., Pros, Z. & Wohlgemuth, J., 1993. Development of magnetic and elastic anisotropies in slates during progressive deformation. Phys. Earth Planet. Inter., 77, 251-265.

Hrouda, F. & Potfaj, M., 1993. Deformation of sediments in the post-orogenic Intra-Carpathian Paleogene Basin as indicated by magnetic anisotropy. Tectonophysics, 224, 425-434.

Hrouda, F. & Potfaj, M., 1993. Magnetic anisotropy as an indicator of the weak ductile deformation of the Intracarpathian Palaeogene and the Magura Flysch (in Czech). Zap. Karpaty, geol., 17, 121-134.

Hrouda, F. & Prichystal, A., 1995. Magnetic fabric relationship between Palaeozoic volcanic and sedimentary rocks in the Nizky Jesenik Mts. (NE Moravia). J. Czech Geol. Soc. 40, 91-102.

Hrouda, F., Melka, R. & Schulmann, K.,1994. Periodical changes in fabric intensity during simple shear deformation and its implications for magnetic susceptibility anisotropy of sedimentary and volcanic rocks. Acta Univ. Carol., Geologica, 38, 37-56.

Hrouda, F., Chlupacova, M. & Friedrich, D., 1996. Temperature variations of magnetic susceptibility in rocks of the KTB pilot borehole and its vicinity (German part of the Bohemian Massif) and their geological and geophysical implications. Jour. Czech Geol. Soc. 41/3-4, 176-182.

Hrouda, F., Schulmann, K., Suppes, M., Ullemayer, K., de Wall, H. & Weber, K., 1997. Quantitative relationship between low-field AMS and phyllosilicate fabric: a review. Phys. Chem. Earth, 22, 153-156.

Hrouda, F. and Jezek, J., 1999. Magnetic anisotropy indications of deformations associated with diagenesis. Palaeomagnetism and Diagenesis in Sediments, D.H. Tarling and P. Turner (eds.), Geological Society, London, Special Publications, 151, 127-137.

Hrouda, F., Taborska, S., Schulmann, K., Jezek, J. and Dolejs, D., 1999. Magnetic fabric and rheology of co-mingled magmas in the Nasavrky Plutonic Complex (E Bohemia): implications for intrusive strain regime and emplacement mechanism. Tectonophysics, 307, 93-111.

Hrouda, F., Krejci, O. and Otava, J., 2000. Magnetic fabric in folds of the Eastern Rheno-Hercynian Zone. Phys. Chem. Earth (A), 25, 505-510.

Hrouda, F. and Ullemayer, K., 2001. Quantitative correlation of biotite lattice preferred orientations and magnetic fabrics in granulites from the Southern Bohemian Massif. Z. dt. Geol. Ges., 152, 547-561.

Hrouda, F., Plasienka, D. and Gregorova, D., 2002. Assumed Neogene deformation in the Central West Carpathians inferred from magnetic anisotropy investigations. EGS Stephan Mueller Publication Series, vol. 1, 195-211.

Hrouda, F., Chlupacova, M. and Novak, J.K., 2002. Variations in magnetic anisotropy and opaque mineralogy along a kilometer deep profile within a vertical dyke of the syenogranite porphyry at Cinovec (Czech Republic). J. Volcanol. Geotherm. Res., 113, 37-47.

Hrouda, F., Putis, M. and Madaras, J., 2002. The Alpine overprints of the magnetic fabrics in the basement and cover rocks of the Veporic Unit (Western Carpathians, Slovakia). Tectonophysics 359, 271-288.

Hrouda, F., Muller, P. and Hanak, J., 2003. Repeated progressive heating in susceptibility vs. temperature investigation: a new palaeotemperature indicator? Phys. Chem. Earth 28, 653-657.

Hrouda, F., Chlupacova, M., Schulmann, K., Smid, J., Zavada, P., 2005. On the effect of lava viscosity on the magnetic fabric intensity in alkaline volcanic rocks. Studia Geophys. Geod., 49, 191-212.

Kapicka, A., Petrovsky, E., Hrouda, F. and Pohl, J., 1998: Changes in magnetic parameters of rocks under pressure conditions of the Earth's crust: relationship to magnetic mineralogy. Rev. High Pressure Sci. Technol., 7, 69-71.

Kratinova, Z., Zavada, P., Hrouda, F. and Schulmann, K., 2006. Non-scaled analogue modelling of AMS development during viscous flow: A simulation on diapir-like structures. Tectonophysics, 418, 51-61.

Parry, M., Stipska, P., Schulmann, K., Hrouda, F., Jezek, J. and Kroner, A., 1997. Tonalite sill emplacement at an oblique plate boundary: northeastern margin of the Bohemian Massif. Tectonophysics, 280, 61-81.

Zak, J., Schulmann, K. and Hrouda, F., 2005. Multiple magmatic fabrics in the Sazava pluton (Bohemian Massif, Czech Republic): a result of superposition of wrench-dominated regional transpression on final emplacement. J. Struct. Geol., 27,805-822.