Martin Staněk

Dr. Martin Staněk (1983) has been a research fellow at the Institute of Geophysics CAS since 2013. He investigates the effect of void spaces (cracks, pores) within the structure of rocks on their physical properties including the ability to transmit fluids or the ability to conduct heat. These properties define the suitability of specific geological sites for industrial applications such as deep geothermal wells, underground gas and heat storage or deep radioactive waste disposals.
For the community of professionals, he provides laboratory ultrasound analyses of rocks using an apparatus developed at the Institute of Geophysics’ lab, which is disposed to evaluate the orientation of cracks in rock sample and to determine at what depth the cracks comply; he also provides expert support in other techniques for experimental measurement of rock physical properties. He communicates the scientific knowledge to the general public and to undergraduate students by means of demonstrations of the employment of light microscope and of ultrasound testing on rock samples.

Former research project: AMS vs. shear zone (GJ16-25486Y)

Publications

• Staněk, M., Machek, M., Kusbach, V., Píšová, B. (2024). Dataset of P-wave velocity anisotropy measured on spherical samples of various rock types with an example of data analysis of retrogression related changes in eclogite and peridotite. Journal of Geodynamics, 102032, https://doi.org/10.1016/j.jog.2024.102032
• Staněk, M., Géraud, Y., (2019): Granite microporosity changes due to fracturing and alteration: secondary mineral phases as proxies for porosity and permeability estimation, Solid Earth, 10, 251-274,  https://doi.org/10.5194/se-10-251-2019, download here.
• Staněk, M., Géraud, Y., Lexa, O, Špaček, P., Ulrich, S. and Diraison, M., (2013), Elastic anisotropy and pore space geometry of schlieren granite: direct 3-D measurements at high confining pressure combined with microfabric analysis, Geophys. J. Int., DOI: 10.1093/gji/ggt053.
• Machek M., Roxerová Z., Janoušek V., Staněk M., Petrovský E., René M., (2013), Petrophysical and geochemical constraints on alteration processes in granites, Studia Geophysica et Geodaetica, DOI: 10.1007/s11200-013-0923-6

Expert analyses of physical properties of rocks

• P-wave velocity
  • multidirectional ultrasounding on spherical samples at high confining pressure 0.1 – 400 MPa (setup at the IG lab.)
  • simple ultrasounding (Proceq Pundit Lab)
• permeability: gas permeametry (4 MPa confining pressure setup at GeoRessources, Nancy, France)
• porosity, throat and pore size distribution, density
  • mercury porosimetry (Micromeritics AutoPore IV)
  • magnetic resonance (Bruker Minispeq mq20)
• thermal conductivity: optical scanning (TCS setup)
• electrical resistivity: 4 electrodes (IRIS Syscal Kid)
• anisotropy of magnetic susceptibility (Agico KLY-4)