Paleostress and kinematic evolution of the orogen-parallel NW-SE striking faults in the NW External Dinarides of Slovenia unraveled by mesoscale fault-slip data anaysis
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Abstract
The late Eocene to Recent dynamics of the NW External Dinarides in Slovenia are described. The study is focused on the orogen-parallel NW-SE striking family of faults, which represent the main source of seismic hazard in the NW External Dinarides today. Approximately 1700 fault-slip datasets were collected at 70 locations and used for palaeostress analysis. Structural relationships observed in the field, allowed the construction of a relative chronology between the documented fault and shear joint sets, facilitating the reconstruction of their kinematic evolution and the chronology of palaeostress phases. Four post-Palaeocene stress tensor groups are documented corresponding to four distinct tectonic phases. The first phase is marked by NE-SW directed compression attributed to Late Eocene top-to-SW thrusting of External Dinarides. The second phase is characterized by NE-SW oriented tension, documented by normal slips recorded on NW-SE striking faults. This tension is interpreted as an expression of the Early to Middle Miocene back-arc extension in the Pannonian basin system that also affected the studied part of the External Dinarides. The third phase is manifested by approximately E-W oriented compression with approximately N-S oriented tension in a strike-slip stress regime, causing sinistral reactivation of NW-SE trending faults. Geodynamically, this phase can be correlated with the Late Miocene short pulse of E-W directed compression, documented in parts of the Pannonian basin system. The youngest phase is characterized by approximately N-S oriented compression and approximately E-W oriented tension in a strike-slip stress regime, which caused dextral reactivation of NW-SE striking faults. This phase correlates with the recent inversive/transpressive phase, well-established from seismological data.
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References
BARTOL, M., MIKUŽ, V. & HORVAT, A. (2014): Palaeontological evidence of communication between the Central Paratethys and the Mediterranean in the late Badenian/early Serravalian.- Palaeogeography, palaeoclimatology, palaeoecology, 394, 144-157.
BAVEC, M., CAR, M., STOPAR, R., JAMŠEK RUPNIK, P. & GOSAR, A. (2012): Geophysical evidence of recent activity of the Idrija fault, Kanomlja, NW Slovenia.- Materials and geoenvironment, 59, 247-256.
BISHOP, A. W. (1966): The strength of soils as engineering materials.- Geotehnique, 16, 91-130.
BOTT, M. H. P. (1959): The mechanisms of oblique slip faulting.- Geological Magazine, 96, 109-117.
BUDKOVIČ, T., ŠAJN, R. & GOSAR, M. (2003): Environmental impact of active and abandoned mines and metal smelters in Slovenia.- Geologija, 46/1, 135-140. doi: 10.5474/geologija.2003.014
BUSER, S., FERJANČIL, L., GRAD, D., KERČMAR-TURNŠEK, D., MENCEJ, S., OREHEK, S., PAVLOVEC, R., PLENIČAR., M., PRESTOR, L., RIJAVEC, L., ŠRIBAR, L., 1963.- Osnovna geološka karta SFRJ 1 : 100 000, List Postojna. Beograd.
BUSETTI, M., VOLPI, V., NICOLICH, R., BARISON, E., ROMEO, R., BARADELLO, L., BRANCATELLI, G., GIUSTINIANI, M., MARCHI, M., ZANOLLA, C., WARDELL, N., NIETO, D. & RAMELLA, R. (2010): Dinaric tectonic features in the Gulf of Trieste (northern Adriatic Sea).- Bollettino di Geofisica Teorica ed Applicata, 51/2-3, 117-128.
ČRNE, A.E., & GORIČAN, Š. (2008): The Dinaric carbonate platform margin in the early Jurassic: a comparison between succession in Slovenia and Montenegro.- Bollettino della Società geologica italiana,127/2, 389-405.
DEBELJAK, I., KOŠIR, A., BUFFETAUT, E. & OTONIČAR, B. (2002): The Late Cteraceous dinosaurs and crocodiles of Kozina (SW Slovenia): a preliminary study.- Memorie - Società Geologica Italiana, 57, 193-201.
DOBLAS, M. (1998): Slickenside kinematic indicators.- Tectonophysics, 295, 187-197.
DROBNE, K., ĆOSOVIĆ, V., MORO, A. & BUCKOVIĆ, D. (2011): The Role of the Paleogene Adriatic Carbonate Platform in the Spatial Distribution of Alveolinids.- Turkish Journal of Earth Sciences, 20, 721-751. doi: 10.3906/yer-0911-76
FODOR, L., JELEN, B., MÁRTON, E., SKABERNE, D., ČAR, J. & VRABEC, M. (1998): Miocene-Pliocene tectonic evolution of the Slovenian Periadriatic fault: Implications for Alpine-Carpathian extrusion models.- Tectonics, 17, 690-709.
FODOR, L., CSONTOS, L., BADA, G., GYÖRFI, I. & BENKOVICS, L. (1999): Tertiary tectonic evolution of the Pannonian basin system and neighbouring orogens: a new synthesis of paleostress data.- In: DURAND, B., JOLIVET, L., HORVÁTH, F. & SÉRANNE, M. (eds.): The Mediterranean Basins: Tertiary extension within the Alpine Orogen. Geological Society, London, Special Publications, 156, 295-334.
FODOR, L., JELEN, B., MÁRTON, E., RIFELJ, H., KRALJIĆ, M., KEVRIĆ, R., MARTON, P., KOROKNAI, B. & BALDI-BEKE, M. (2002): Miocene to Quaternary deformation, stratigraphy and paleogeography in Northeastern Slovenia and Southwestern Hungary.- Geologija, 45, 103-114. doi:10.5474/geologija.2002.009
GOSAR, A. (1998): Seismic reflection surveys of the Krško basin structure: implications for earthquake hazard at the Krško nuclear power plant, southeast Slovenia.- Journal of Applied Geophysics, 39, 131-153.
GREGORIČ, A. (2005): Analiza razvoja paleonapetosti v Dinarskem narivnem sistemu zahodne Slovenije (okolica Nove Gorice).- Unpubl. Diploma Thesis, Faculty of Natural Sciences and Engineering, University of Ljubljana, 84 p.
HANDY, R.M., USTASZEWSKI, K. & KISSLING, E. (2015): Reconstructing the Alps-Carpathians-Dinarides as a key to understanding switches in subduction polarity, slab gaps and surface motion.- International Journal of Earth Sciences (Geological Rundschau), 104, 1-26. doi: 10.1007/s00531-014-1060-3
HERAK, D., HERAK., M. & TOMLJENOVIĆ, B. (2009): Seismicity and earthquake focal mechanisms in North-Western Croatia.- Tectonophysics, 465, 121-220. doi: 10.1016/j.tecto.2008.12.005
HORVÁTH, F. & ROYDEN, L. (1981): Mechanism for the Formation of the Intra-Carpathian Basins: a Review.- Earth Evolution Science, 3, 307-316.
HORVÁTH, F. & CLOETINGH, S. (1996): Stress-induced late-stage subsidence anomalies in the Pannonian Basin.- Tectonophysics, 266, 287-300.
ILIĆ, A. & NEUBAUER, F. (2005): Tertiary to recent oblique convergence and wrenching of the Central Dinarides: Constraints from paleostress study.- Tectonophysics, 410, 465-484. doi: 10.1016/j.tecto.2005.02.019
JAMŠEK RUPNIK, P., BENEDETTI, L., PREUSSER, F., BAVEC, M. & VRABEC, M. (2014): Geomorphic evidence of recent activity along the Vodice thrust fault in the Ljubljana Basin (Slovenia) a preliminary study.- Annals of geophysics, 56, 1-8. doi: 10.4401/ag-6252
JEŽ, J., OTONIČAR, B., FUČEK, L. & OGORELEC, B. (2011): Late Cretaceous sedimentary evolution of a northern sector of the Adriatic Carbonate Platform (Matarsko Podolje, SW Slovenia).- Facies, 57/3, 447-468. doi: 10.1007/s10347-010-0249-6
KASTELIC, V., VRABEC, M., CUNNINGHAM, D. & GOSAR, A. (2008): Neo-Alpine structural evolution and present-day tectonic activity of the eastern Southern Alps: The case of the Ravne Fault, NW Slovenia.- Journal of Structural Geology, 30, 963-975. doi: 10.1016/j.jsg.2008.03.009
KASTELIC, V. & CARAFA, M. (2012): Fault slip rates for active Exterlam Dinarides thrust-and-fold belt.-Tectonics, 31, 1-18. doi: 10.1029/2011TC003022
KASTELIC, V., VANNOLI, P., BURRATO, P., FRACASSI, U., TIBERTI, M.M. & VALENSISE, G. (2013): Seismogenic sources in the Adriatic Domain.- Marine and Petroleum Geology, 42, 191-213. doi: 10.1016/j.marpetgeo.2012.08.002
MATENCO, L. & RADIVOJEVIĆ, D. (2012): On the formation and evolution of the Pannonian Basin: Constraints derived from the structure of the junction area between the Carpathians and Dinarides.- Tectonics, 31, 1-31. doi: 10.1029/2012TC003206
MÁRTON, E., FODOR, L., JELEN, B., MÁRTON, P., RIFELJ, H. & KEVRIĆ, R. (2002): Miocene to Quaternary deformation in NE Slovenia: complex paleomagnetic and structural study.- Journal of Geodynamics, 34, 627-651.
MELLERE, D., STEFANI, C., ANGEVINE, C., (2000): Polyphase tectonics through subsidence analysis: the Oligo-Miocene Venetian and Friuli Basin, north-east Italy.- Basin Research, 12, 159-182.
MIKES, T., BÁLDI-BEKE, M., KÁZMÉR, M., DUNKL, I., von EYNATTEN, H. (2008): Calcareous nannofossil age constraints on Miocene flysch sedimentation in the Outher Dinarides (Slovenia, Croatia, Bosnia-Herzegovina and Montenegro).- In: SIEGESMUND, S., FÜGENSCHUH, B. & FROITZHEIM, N. (eds.): Tectonic Aspects of the Alpine-Dinaride-Carpathian System. Geological Society, London, Special Publications, 298, 335-363. doi: 10.1144/SP298.16
MIKUŽ, V., BARTOL, M. & ULAGA, Š. (2012): The brachiopod Lingula from the Middle Miocene – Badenian beds of Slovenia.- Geologija, 55/2, 271–274. doi: 10.5474/geologija.2012.017
MLADENOVIĆ, A., TRIVIĆ, B. & CVETKOVIĆ, V. (2015): How tectonics controlled post-collisional magmatism within the Dinarides: Inferences based on study of tectono-magmatic events in the Kopaonik Mts. (Southern Serbia).- Tectonophysics, 646, 36-49. doi: 10.1016/j.tecto.2015.02.001
MLAKAR, I. & ČAR, J. (2010): Geological map of the Idrija – Cerkljansko hills between Stropnik and Rovte 1 : 25.000. Geological Survey of Slovenia, Ljubljana.
MOULIN, A., BENEDETTI, L., GOSAR, A., JAMŠEK RUPNIK, P., RIZZA, M., BOURLÈS, D. & RITZ, J.F. (2014): Determining the present-day kinematics of the Idrija fault (Slovenia) from airborne LiDAR topography.- Tectonophysics, 628, 188-205. doi: 10.1016/j.tecto.2014.04.043
NOZAEM, R., MOHAJJEL., M., ROSSETTI, F., DELLA SETAa, M., VIGNAROLI, G., YASSAGHI, A., SALVINI, F. & ELIASSI M. (2013): Post-Neogene right-lateral strike-slip tectonics at the north-western edge of the Lut Block (Kuh-e-Sarhangi Fault), Central Iran.- Tectonophysics, 589, 220-233. doi: 10.1016/j.tecto.2013.01.001
OTONIČAR, B. (2007): Upper Cretaceous to Paleogene forbulge unconformity associated with foreland basin evolution (Kras, Matarsko Podolje and Istria; SW Slovenia and NW Croatia).- Acta Carsologica, 36, 101-120.
PAMIĆ, J., GUŠIĆ, I. & JELASKA, V. (1998): Geodynamic evolution of the Central Dinarides.- Tectonophysics, 297, 251-268. doi: 10.1016/S0040-1951(98)00171-1
PAVLOVEC, R. (2012): Numulitine iz Zunanjih Dinaridov.- Folia biologica et geologica, 53/3, 85-109.
PERESSON, H. & DECKER, K. (1997): Far-field effects of Late Miocene subduction in the Eastern Carpathians: E-W compression and inversion of structures in the Alpine-Carpathian-Pannonian region.- Tectonics, 16/1, 38-56.
PETIT, J.P. (1987): Criteria for the sense of movement on fault surfaces in brittle rocks.- Journal of Structural Geology, 9, 597-608.
PICHA, F.J. (2002): Late Orogenic Strike-Slip Faulting and Escape Tectonics in Frontal Dinarides-Hellenides, Croatia, Yugoslavia, Albania, and Greece.- AAPG Bulletin, 86/9, 1659-1671.
PLACER., L. (1981): Geologic structure of Southwestern Slovenia.- Geologija, 24, 27-60.
PLACER, L. (1982): Structural history of the Idrija mercury deposit.-Geologija, 25, 7-94.
PLACER, L. & ČAR, J. (1997): Structure of Mt. Blegoš between the Inner and Outer Dinarides.- Geologija, 40, 305-323. doi: 10.5474/geologija.1997.016
PLACER, L. (1998): Contribution to macrotectonic subdivision of the border region between Southern Alps and External Dinarides.- Geologija, 41, 223–255. doi: 10.5474/geologija.1998.013
PLACER, L., ŽIVČIĆ, M. & VRABEC, M. (2001): Recent deformation and seismic activity at the Adria microplate boundary in Western Slovenia and Croatia.- In: BADA, G. (eds.): Quantitative neotectonics and seismic hazard assessment: new integrated approaches for environmental management. Malév Air Tours, 74-75.
PLACER, L. (2008): Principles of the tectonic subdivision of Slovenia.- Geologija, 51, 205-217. doi: 10.5474/geologija.2008.021
PLACER, L., VRABEC, M. & CELARC, B. (2010): The bases for understanding of the NW Dinarides and Istria Peninsula tectonics.- Geologija, 53, 55-86. doi: 10.5474/geologija.2010.005
POLJAK, M., ŽIVČIĆ, M. & ZUPANČIČ, P. 2000: The Seismotectonic Characteristics of Slovenia.- Pure and Applied Geophysics, 157, 37-55.
SCHMID, S. M., BERNOULLI, D., FÜGENSCHUH, B., MATENCO, L., SCHEFER, S., SCHUSTER, R., TISCHLER, M. & USTASZEWSKI, K. (2008): The Alpine-Carpathian-Dinaridic orogenic system: correlation and evolution of tectonic units.- Swiss Journal of Geosciences, 101, 139–183. doi: 10.1007/s00015-008-1247-3
SPERNER, B. & ZWEIGEL, P. (2010): A plea for more caution in fault-slip analysis.- Tectonophysics, 482/1-4, 29-41. doi: 10.1016/j.tecto.2009.07.019
TARI, V. (2002): Evolution of the northern and western Dinarides: a tectonostratigraphic approach.- In: BERTOTTI, G., SCHULMANN, K. & CLOETINGHH, S.A.P.L. (eds.): Continental collision and the tectono – sedimentary evolution of the forelands. EGU Stephan Mueller Special Publication Series, 1, 223-236.
TOMLJENOVIĆ, B. & CSONTOS, L. (2001): Neogene-Quaternary structures in the border zone between Alps, Dinarides and Pannonian Basin (Hrvatsko zagorje and Karlovac Basins, Croatia).- International Journal of Earth Sciences (Geological Rundschau), 90, 560-578. doi: 10.1007/s005310000176
TOMLJENOVIĆ, B., CSONTOS, L., MÁRTON, E. & MÁRTON, P. (2008): Tectonic evolution of the northwestern Internal Dinarides as constrained by structures and rotation of Medvednica Mountains, North Croatia.- In: SIEGESMUND, S., FÜGENSCHUH, B. & FROITZHEIM, N. (eds.): Tectonic Aspects of the Alpine-Dinaride-Carpathian System. Geological Society, London, Special Publications, 298, 145-167. doi: 10.1144/SP298.8
TURNŠEK, D., BUSER, S. & RAMOVŠ, A. (1982): Triassic reefs in Slovenia.- Facies, 6, 15-24.
USTASZEWSKI, K., SCHMID, S.M., FÜGENSCHUH, B., TISCHLER, M., KISSLING, E. & SPAKMAN, W. (2008): A map-view restoration of the Alpine-Carpathian-Dinaridic system for the Early Miocene.- Swiss Journal of Geosciences, 101/1, 273-294. doi: 10.1007/s00015-008-1288-7
USTASZEWSKI, K., KOUNOV, A., SCHMID, S. M., SCHALTEGGER, U., KRENN, E., FRANK, W. & FÜGESCHUH, B. (2010): Evolution of the Adria-Europe plate boundary in the northern Dinarides: From continent-continent collision to back-arc extension.- Tectonics, 29, 1-34. doi:10.1029/2010TC002668
VRABEC, M. & FODOR, L. (2006): Late Cenozoic Tectonics of Slovenia: Structural Styles at the Northeastern Corner of the Adriatic Microplate.- In: PINTER, N., GRENERCZY, G., WEBER, J., STEIN, S. & MEDAK, D. (eds.): The Adria Microplate: GPS Geodesy, Tectonics and Hazards. NATO Science Series, IV, Earth and Environmental Sciences, 61, 151–168.
WALLACE, R.E. (1951): Geometry of shearing stress and relation to faulting.- Journal of Geology, 59, 118-130.
WEBER, J., VRABEC, M., STOPAR, B., PAVLOVIČ-PREŠEREN, P. & DIXON, T. (2006): The PIVO-2003 experiment: A GPS study of Istria Peninsula and Adria microplate motion, and active tectonics in Slovenia.- In: PINTER, N., GRENERCZY, G., WEBER, J., STEIN, S. & MEDAK, D. (eds.): The Adria Microplate: GPS Geodesy, Tectonics and Hazards. NATO Science Series, IV, Earth and Environmental Sciences, 61, 305-320.
WEBER, J., VRABEC, M., PAVLOVIČ-PREŠEREN, P., DIXON, T., JIANG, Y. & STOPAR, B. (2010): GPS-derived motion of the Adriatic microplate from Istria Peninsula and Po Plain sites, and geodynamic implications.- Tectonophysics, 483, 214-222. doi: 10.1016/j.tecto.2009.09.001
ZAJC, M., CELARC, B. & GOSAR, A. (2015): Structural-geological and karst feature investigations of the limestone-flysch thrust-fault contact using low-frequency ground penetrating radar (Adria-Dinarides thrust zone, SW Slovenia).- Environmental earth sciences, 73, 8237-8249. doi: 10.1007/s12665-014-3987-x
ŽALOHAR, J. & VRABEC, M. (2007): Paleostress analysis of heterogeneous fault-slip data: The Gauss method.- Journal of Structural Geology, 29, 1798-1810. doi: 10.1016/j.jsg.2007.06.009
ŽALOHAR, J. & VRABEC, M. (2008): Combined kinematic and paleostress analysis of fault-slip data: The Multiple-slip method.- Journal of Structural Geology, 30, 1603-1613. doi: 10.1016/j.jsg.2008.09.004
ŽIBRET, L. & ŽIBRET, G. (2014): Use of geomorphological indicators for the detection of active faults in southern part of Ljubljana moor, Slovenia.- Acta Geographica Slovenica, 54, 271-291. doi: 10.3986/AGS54203
ŽIBRET, L. (2015): Kinematic and paleostress evolution of the NW-SE trending Dinaric faults in the northwestern External Dinarides.- PhD Thesis, Faculty of Natural Sciences and Engineering, University of Ljubljana, 84 p.