Tectonophysical conditions of late stages of evolution in the middle part of Transcarpathian deep fault
Keywords:Transcarpathian deep fault, right-shift, shear-zone, Neogene magmatism, fissure paragenesis, stress fields
There is a problem of the mechanism of Neogene magmatism appearance in Transcarpathia within tectonic evolution of the Carpathian-Pannonian region. In consideration of general submeridional compression the new kinematic and dynamic scheme of Neogene tectonic and magmatic activation associates magmatism with formation of the shear-zone with right-shift structural paragenesis in the Transcarpathian trough area. According to the scheme the sources of volcanic eruptions were concentrated within the bounds of tension gashes that progressed during the shear-zone impulse evolution. Due to outcrop features of the region the structural argumentation of proposed scheme is effective only in north-eastern border of the shear-zone, on the Transcarpathian deep fault territory, where fault parageneses of different ranks are mapped. Detailed studies carried out within the middle part of the Transcarpathian deep fault allowed to show the jet structure of the central zone of the fault and the intense crushing and exfoliation of flysch formation that took place before volcanism as well as post-volcanic fissure formation. Three stages of fissure formation were marked out and the tectonophysical analysis of their paragenesis shows right-side shift type of local stress fields. The modification of the axes orientation of main normal stresses is explained by consistent implementation of the trans-pressure scheme, the simple shear scheme and the trans-tension scheme. The volcanic rocks, which cover tectonic rocks of the Transcarpathian deep fault seam zone, contain the sporadically shown up fault structures that are the evidence of lateral as well as sub-vertical displacement.
Bubnyak I., Vikhot Yu., 2012. Tectonophysic research of flysh deposits of the Zelemianka thrust in the valleys of Kobilets and Yagystiv rivers. Pratsi NTSh. Geologichnyy zbirnyk 30, 119—130 (in Ukrainian).
Bubnyak I. N., Vikhot Yu. M., Nakapelyukh M. V., 2013. The stress-and-strain state of the south-eastern part of the Skyba and Boryslav-Pokuttya nappes of the Ukrainian Carpathians. Geodinamika i tektonofizika 4 (is. 3), 313—326 (in Russian).
Vasylenko A. Yu., 2014. The shift indicators in the zone of Transcarpathian deep fault. Visnyk Kyivskogo universitetu. Geologiya is. 2(65), 18—22 (in Ukrainian).
Vikhot Yu., Bubnyak I., 2011. Stress fields in the flysh strata of the Orivska, Skolivska and Parashka thrusts (by researches in the basin of the Sukil river). Geodynamika 1(10), 75—82 (in Ukrainian).
Vikhot Yu. M., Bubnyak I. M., Nakapelyukh M. V., 2011. Results of tectonophysical studies of flysh deposits of the Skyba nappe of the Ukrainian Carpathians in the valley of the Bystrytsia Nadvornianskaya river. Geologichnyy zhurnal (2), 72—80 (in Ukrainian).
Gzovskiy M. V., 1975. Basic tectonophysics. Moscow: Nauka, 536 p. (in Russian).
Gintov O. B., 2005. Field tectonophysics and its application in the study of crustal deformation of Ukraine. Kiev: Feniks, 572 p. (in Russian).
Gintov O. B., Bubnyak I. M., Vikhot Yu. M., Murovskaya A. V., Nakapelyukh M. V., 2011. The evolution of the stressandstrain state and the dynamics of the Skyba nappe of the Ukrainian Carpathians. Geofizicheskiy zhurnal 33(5), 17—34 (in Russian).
Lazko E. M., Rezvoy D. P., 1962. About tectonic genesis of Carpathian klippen zone. Visnyk Lvivskogo universytetu. Seriya geologichna (1) (in Ukrainian).
Lyashkevitch Z. M., Medvedev A. P., Krupskiy U. Z., Varichev A. S., Timoshchuk V. P., Stupka O. O., 1995. Tectonic and magmatic evolution of Carpathians. Kiev: Naukova Dumka, 132 p. (in Russian)].
Merlich B. V., Spitkovskaya S. M., 1973. The evolution of Transpannonian deep fault (Transcarpathia) in preneogene times. Geologicheskiy sbornik Lvovskogo geologicheskogo soobschestva (14), 119—130 (in Russian).
Nakapelyukh M. V., Vikhot Yu. M., Bubnyak I. M., 2011. The balanced crosssection of the Skyba nappe of the Ukrainian Carpathians, the Sukil river valley. Modern tectonophysics. Methods and results. Proceedings of the 2nd Tectonophysical Youth Workshop, October 17—21, 2011. Vol. 1. Moscow: IPE RAS Publ., 187—190 (in Russian).
Pavlyuk M., Lyashkevich Z., Medvedev A., 2013. The Ukrainian Carpathians in the Pancardian structure. Geodinamika (1), 45—59 (in Ukrainian).
Shevchuk V., Voloshyn O., 2002. Kinematic and dynamic conditions of Transcarpathian neogene magmatism. Visnyk Kyivskogo universitetu. Geologiya (is. 21), 10—13 (in Ukrainian).
Shevchuk V., Vasylenko A., 2014. The new scheme of geodynamical control of Transcarpathian neogene magmatism. Visnyk Odeskogo universitetu. Geografichni ta geologichni nauky 19(is. 4), 284—290 (in Ukrainian).
Ciulavu D., Dinu C., Szakacs A., Dordea D., 2000. Neogene kinematics of the Transylvanian basin (Romania). American Association of Petroleum Geologists 84 (10), 1589—1615. http://dx.doi.org/10.1306/8626BF0B173B11D78645000102C1865D.
Konon A., 2001. Tectonics of the Beskid Wyspowy Mountains (Outer Carpathians, Poland). Geol. Quart. 45 (2), 179—204.
Matenco L., Bertotti G., 2000. Tertiary tectonic evolution of the external East Carpathians (Romania). Tectonophysics 316 (3-4), 255—286. http://dx.doi.org/10.1029/97TC01238.
Matenco L., Bertotti G., Dinu C., Cloetingh S., 1997. Tertiary tectonic evolution of the external South Carpathians and the adjacent Moesian platform (Romania). Tectonics 16 (6), 896—911. http://dx.doi.org/10.1016/S00401951(99)002619.
Nemcok M., Hok J., Kovac P., Marko F., Coward M.P., Madaras J., Houghton J., Bezak V., 1998. Tertiary extension development and extension/compression interplay in the West Carpathians mountain belt. Tectonophysics 290 (1-2), 137—167. http://dx.doi.org/10.1016/S00401951(98)00016X.
How to Cite
Copyright (c) 2020 Geofizicheskiy Zhurnal
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).