MAGNETOTELLURIC AND GRAVITY MODELLING OF CRUSTAL STRUCTURES IN THE NORTHERN SLOVAKIA (WESTERN CARPATHIANS)

Bezák V., Pek J., Vozár Ján, Bielik M., Vozár Jozef, Geoelectrical and geological structure of the crust in Western Slovakia. Studia Geophysica et Geodaetica, 58 , 473- 488, 2014.

Bezák V., Pek J., Majcin D., Bučová J., Šoltis T., Bilčík D., Klanica R., Geological interpretation of magnetotelluric sounding in the southern part of seismic profile 2T (Central Slovakia). Contributions to Geophysics and Geodesy, 44/4, 329–339, 2015.

Bielik, M., Continental convergence in the Carpathian region by density modelling. Geologica Carpathica, 46, 3-12, 1995.

Bielik M., Kloska K., Meurers B., Švancara J., Wybraniec S. & CELEBRATION 2000 Potential Field Working Group, Gravity anomaly map of the CELEBRATION 2000 region. Geologica Carpathica 57/3, 145-156, 200 6.

Buday T., Bezák V., Potfaj M., Suk M., Discussion to interpretation of reflex seismic profiles in Western Carpathians, Mineralia Slovaca, 23, 3-4, 275-276 (in Czech), 1991.

Červ V., Pek J., Menvielle M., Bayesian approach to magnetotelluric tensor decomposition. Annals of Geophysics, 53/2, 21-32, 2010.

Groom R. W., Bailey R. C., Decomposition of magnetotelluric impedance tensors in the presence of local three-dimensional galvanic distortion. J. Geophys. Res., 94, 1913- 1925, 1989.

Lexa J., Bezák V., Elečko M., Mello J., Polák M., Potfaj M., Vozár J., Eliáš M., Konečný V., Less Gy., Mande G.W., Mello J., Pálenský P., Pelikán P., Polák M., Potfaj M., Radócz Gy., Rylko W., Schnabel W., Stráník Z., Vass D., Vozár J., Zelenka T., Geological map of Western Carpathians and adjacent areas 1:500 000. ŠGÚDŠ, Bratislava, 2000.

Makarenko I., Legostaeva O., Bielik M., Starostenko V., Dérerová J. & Šefara J., 3D gravity effects of the sedimentary complexes in the Carpathian-Pannonian region. Geologica Carpathica 53, special issue, 2002.

Pek J., Santos F.A.M., Li Y., Non-Linear Conjugate Gradient Magnetotelluric Inversion for 2- D Anisotropic Conductivities. In Börner R.U., Schwalenberg K., Eds., Proceed. 24th Colloq. Electromagnetic Depth Investigations, Neustadt/Weinstr., 26.9. – 30.9. 2011, DGG, 187-206, 2012.

Rodi,W., Mackie, R.L., Nonlinear conjugate gradients algorithmfor 2D magnetotelluric inversion. Geophysics 66, 174-187, 2001.

Simpson F., Bahr K., Practical Magnetotellurics, Cambridge Univ. Press, 254 pp., 2005.

Tomek Č., Švancara J., Budík L., The depth and the origin of the West Carpathian gravity low. Earth Planet. Sci. Lett., 44, 39-42, 1979.

Tomek Č., Ibrmajer J., Koráb T., Biely A., Dvořáková L., Lexa J., Zboř il A., Crustal structures of the West Carpathian on deep reflection seismic line 2T. Mineralia Slov., 21, 3-26 (in Slovak), 1989.

Varga G., Lada F., Magnetotelluric measurement on the profile 2T. Unpublished report, ELGI Budapest, Geofyzika Brno, 239 pp., 1988. 16th International Multidisciplinary Scientific GeoConference SGEM2016 www.sgem.org 16th International Multidisciplinary Scientific GeoConference SGEM 2016 Fig. 1. Location of the profile 2T in the central Slovakia. Fig. 2. Position of measured MT points on the profile 2T – North. Geological situation after Lexa et al. (2000). 7 – nappes of the Flysch belt: b – Bystrica nappe, k – Krynica nappe, 10 – Klippen belt, 12 – Neogene sedimentary rocks, 17 – sediments of the Inner Carpathian Paleogene basin, 19 – Tatricum: a) crystalline basement; b) sedimentary cover, 20 – Veporicum: a) crystalline basement, b) sedimentary cover and Fatricum nappe, 21 – Hronicum nappe. POLAND HUNGARY AUSTRIA CZECH REPUBLIC UKRAINE Bratislava Trnava Banská Bystrica Košice 2T 2T SouthSouth Lučenec Brezno 2T 2T NorthNorthŽilina 16th International Multidisciplinary Scientific GeoConference SGEM2016 www.sgem.org Applied and Environmental Geophysics Fig. 3. Geoelectric model of the northern part of the 2T profile and its geological interpretation. OWC – Outer Western Carpathians, KB – Klippen belt, EP – European platform, PC – platform cover, FB – Flysch belt, Or – Oravic basement, M – Mesozoic complexes, ICP – Inner Carpathian Paleogene, G – granitoids, m – mica-schists and gneisses, N – Neogene sediments, CCZ – Carpathian Conductive Zone, Pr – Prosiek fault, Tr – Trangoška shear zone, Nt – Nízke Tatry fault. Fig. 4. Gravity model. EP – European platform, Or – Oravic basement, FB – Flysch belt, KB – Klippen belt, T – Tatricum, M – Mesozoic complexes, LC – Lower crust. km 10 20 30 40 50 60 70 80 90 km FB KB M M T LC Or -0.04 -0.02 -0.02 -0.02 0.00 0.05 0.08 EP Oravské Beskydy Mts. Ní zke Tatry Mts. NW SE 16th International Multidisciplinary Scientific GeoConference SGEM2016 www.sgem.org 16th International Multidisciplinary Scientific GeoConference SGEM 2016 16th International Multidisciplinary Scientific GeoConference SGEM2016 www.sgem.org

Bezák V., Pek J., Vozár Ján, Bielik M., Vozár Jozef, Geoelectrical and geological structure of the crust in Western Slovakia. Studia Geophysica et Geodaetica, 58 , 473- 488, 2014.

Bezák V., Pek J., Majcin D., Bučová J., Šoltis T., Bilčík D., Klanica R., Geological interpretation of magnetotelluric sounding in the southern part of seismic profile 2T (Central Slovakia). Contributions to Geophysics and Geodesy, 44/4, 329–339, 2015.

Bielik, M., Continental convergence in the Carpathian region by density modelling. Geologica Carpathica, 46, 3-12, 1995.

Bielik M., Kloska K., Meurers B., Švancara J., Wybraniec S. & CELEBRATION 2000 Potential Field Working Group, Gravity anomaly map of the CELEBRATION 2000 region. Geologica Carpathica 57/3, 145-156, 200 6.

Buday T., Bezák V., Potfaj M., Suk M., Discussion to interpretation of reflex seismic profiles in Western Carpathians, Mineralia Slovaca, 23, 3-4, 275-276 (in Czech), 1991.

Červ V., Pek J., Menvielle M., Bayesian approach to magnetotelluric tensor decomposition. Annals of Geophysics, 53/2, 21-32, 2010.

Groom R. W., Bailey R. C., Decomposition of magnetotelluric impedance tensors in the presence of local three-dimensional galvanic distortion. J. Geophys. Res., 94, 1913- 1925, 1989.

Lexa J., Bezák V., Elečko M., Mello J., Polák M., Potfaj M., Vozár J., Eliáš M., Konečný V., Less Gy., Mande G.W., Mello J., Pálenský P., Pelikán P., Polák M., Potfaj M., Radócz Gy., Rylko W., Schnabel W., Stráník Z., Vass D., Vozár J., Zelenka T., Geological map of Western Carpathians and adjacent areas 1:500 000. ŠGÚDŠ, Bratislava, 2000.

Makarenko I., Legostaeva O., Bielik M., Starostenko V., Dérerová J. & Šefara J., 3D gravity effects of the sedimentary complexes in the Carpathian-Pannonian region. Geologica Carpathica 53, special issue, 2002.

Pek J., Santos F.A.M., Li Y., Non-Linear Conjugate Gradient Magnetotelluric Inversion for 2- D Anisotropic Conductivities. In Börner R.U., Schwalenberg K., Eds., Proceed. 24th Colloq. Electromagnetic Depth Investigations, Neustadt/Weinstr., 26.9. – 30.9. 2011, DGG, 187-206, 2012.

Rodi,W., Mackie, R.L., Nonlinear conjugate gradients algorithmfor 2D magnetotelluric inversion. Geophysics 66, 174-187, 2001.

Simpson F., Bahr K., Practical Magnetotellurics, Cambridge Univ. Press, 254 pp., 2005.

Tomek Č., Švancara J., Budík L., The depth and the origin of the West Carpathian gravity low. Earth Planet. Sci. Lett., 44, 39-42, 1979.

Tomek Č., Ibrmajer J., Koráb T., Biely A., Dvořáková L., Lexa J., Zboř il A., Crustal structures of the West Carpathian on deep reflection seismic line 2T. Mineralia Slov., 21, 3-26 (in Slovak), 1989.

Varga G., Lada F., Magnetotelluric measurement on the profile 2T. Unpublished report, ELGI Budapest, Geofyzika Brno, 239 pp., 1988. 16th International Multidisciplinary Scientific GeoConference SGEM2016 www.sgem.org 16th International Multidisciplinary Scientific GeoConference SGEM 2016 Fig. 1. Location of the profile 2T in the central Slovakia. Fig. 2. Position of measured MT points on the profile 2T – North. Geological situation after Lexa et al. (2000). 7 – nappes of the Flysch belt: b – Bystrica nappe, k – Krynica nappe, 10 – Klippen belt, 12 – Neogene sedimentary rocks, 17 – sediments of the Inner Carpathian Paleogene basin, 19 – Tatricum: a) crystalline basement; b) sedimentary cover, 20 – Veporicum: a) crystalline basement, b) sedimentary cover and Fatricum nappe, 21 – Hronicum nappe. POLAND HUNGARY AUSTRIA CZECH REPUBLIC UKRAINE Bratislava Trnava Banská Bystrica Košice 2T 2T SouthSouth Lučenec Brezno 2T 2T NorthNorthŽilina 16th International Multidisciplinary Scientific GeoConference SGEM2016 www.sgem.org Applied and Environmental Geophysics Fig. 3. Geoelectric model of the northern part of the 2T profile and its geological interpretation. OWC – Outer Western Carpathians, KB – Klippen belt, EP – European platform, PC – platform cover, FB – Flysch belt, Or – Oravic basement, M – Mesozoic complexes, ICP – Inner Carpathian Paleogene, G – granitoids, m – mica-schists and gneisses, N – Neogene sediments, CCZ – Carpathian Conductive Zone, Pr – Prosiek fault, Tr – Trangoška shear zone, Nt – Nízke Tatry fault. Fig. 4. Gravity model. EP – European platform, Or – Oravic basement, FB – Flysch belt, KB – Klippen belt, T – Tatricum, M – Mesozoic complexes, LC – Lower crust. km 10 20 30 40 50 60 70 80 90 km FB KB M M T LC Or -0.04 -0.02 -0.02 -0.02 0.00 0.05 0.08 EP Oravské Beskydy Mts. Ní zke Tatry Mts. NW SE 16th International Multidisciplinary Scientific GeoConference SGEM2016 www.sgem.org 16th International Multidisciplinary Scientific GeoConference SGEM 2016 16th International Multidisciplinary Scientific GeoConference SGEM2016 www.sgem.org