№ 2, 2018

Contemporary structure and active tectonics of southern slope of the Greater Caucasus within Azerbaijan (interfluves of Mazymchai and Pirsaat rivers) Part II: Active tectonics

Kangarli T.N.¹, Aliyev F.A.¹, Aliyev A.M.², Kazymova S.E.³, Safarov R.T.¹, Vahabov U.G.¹

1 – Geology and Geophysics Institute of ANAS, H. Javid Ave., 119, Baku, Azerbaijan, AZ1143: tkangarli@gmail.com

2 – Geophysical Expedition of National Geological Survey, Ministry of Ecology and Natural Resources, Natavan Str., 16, Baku, Azerbaijan, AZ1117

3 – Republican Centre of Seismological Survey, ANAS, N. Rafibeyli Str., 25, Baku, Azerbaijan, AZ1001

Summary. This part of the paper ends dedication to the research of the deep structure and geodinamic activity of the southern slope of the Greater Caucasus within Azerbaijan. It studies active tectonics of the region from the viewpoint of the mechanism of undergoing (pseudo-subduction) within convergency zone of the south and north microplates. We have analysed and interpreted the seismogeological data, as well as GPS monitoring results about contemporary geodynamic activity determining correlations with deep structure peculiarities. Analysis and correlation of historical and recent seismic events (until 2017) show that the earthquake focuses are mainly confined to the intersection nodes of differently striking rupture dislocations, or to the planes of deep tectonic failures and lateral displacements along the unstable contacts of material complexes with different competence. Earthquake focal mechanisms inform about predominantly near-vertical shifts along normal fault planes and normal faults with strike-slip components, but in general earthquake focuses are confined to the intersection nodes of main- and anti-Caucasus rupture dislocations.

Keywords: Greater Caucasus, Alpine cover, Pre-Jurassic basement, active fault, recent geodynamics, earthquake focal mechanism, stress state, disjunctive knot



Akhmadbeili F.S., Ismail-zade A.J., Kengerli T.N. Geodynamics of East Caucasus in Alpine tectonic-magmatic cycle (Azerbaijan).  Proceedings of Geology Institute ANAS, № 30, 2002, pp. 36-48 (in Russian).

Aliyev F., Kangarli T., Aliyev A., Vahabov U. Recent geodynamics and seismicity of the Greater Caucasus (within Azerbaijan). Proceedings of the 36th National and the 3rd International Geosciences Congress. 2018 http://36nigc.conference.gsi.ir/en .

Alizadeh Ak.A., Kangarli T.N., Aliyev F.A. Tectonic stratification and seismicity of the accretionary prism of the Azerbaijani part of Greater Caucasus. Proceeding of European Geosciences Union (EGU) General Assembly 2013 http://meetingorganizer.copernicus.org/EGU2013/EGU2013-445-1.pdf

Geology of Azerbaijan, V.IV. Tectonics (editors V.Y. Khain and Ak.A. Alizade). Nafta-Press. Baku, 2005, 506 p. (in Russian).

Kadirov F., Mammadov S., Reilinger R., McClusky S. Some new data on modern tectonic deformation and active faulting in Azerbaijan (according to Global Positioning System Measurements). Proseeding of ANAS. The Sciences of Earth, № 1, 2008, pp. 82-88.

Kadirov F., Safarov R., Mammadov S. Crustal deformation of the Caucasus region derived from GPS measurements. Proceedings of the 36th National and the 3rd International Geosciences Congress. 2018. http://36nigc.conference.gsi.ir/en.

Kadirov F.A. Safarov R.T. Deformation of Earth crust of Azerbaijan and adjacent territories according to data of GPS-measurements. Proceedings of ANAS, The sciences of Earth, № 1, 2013, pp. 47-55 (in Russian).

Kadirov F.A., Floyd M., Reilinger R., Alizadeh Ak.A., Guliyev I.S., Mammadov S.G., Safarov R.T. Active geodynamics of the Caucasus region: implications for earthquake hazards in Azerbaijan. Proceedings of ANAS. The Sciences of Earth, № 3, 2015. pp. 3-17.

Kadirov F.A., Kadirov A.G., Aliyev F.A., Mammadov S.K., Safarov R.T. GPS-monitoring and seismicity of collision zone of Azerbaijan area of the Greater Caucasus. Proceedings of ANAS. The sciences of Earth, № 3, 2009, pp. 12-18 (in Russian).

Kangarli T., Aliyev F., Aliyev A., Rashidov T. Geodynamics and active faults of the pseudo-subduction zone in Greater Caucasus on the basis of seismological data (within Azerbaijan). European Geosciences Union (EGU) General Assembly 2018. http://meetingorganizer.copernicus.org/EGU2018/EGU2018-6713.pdf

Kangarli T.N. Mass overthrust within the structure of Greater Caucasus (Azerbaijan). In: The modern problems of geology and geophysics of Eastern Caucasus and the South Caspian depression. Nafta-Press. Baku, 2012, pp.163-201.

Kangarli T.N., Aliyev A.M., Aliyev F.A., Rahimov F.M. Seismotectonic zoning of Azerbaijan territory. Proceeding of European Geosciences Union (EGU) General Assembly 2017a. http://meetingorganizer.copernicus.org/EGU2017/EGU2017-12778.pdf

Kangarli T.N., Aliyev F.A., Aliyev A.M., Vahabov U.G. Active tectonics and focal mechanisms of earthquakes in the pseudosubduction active zone of the North- and South-Caucasus microplates (within Azerbaijan). Geophysical journal, Institute of Geophysics of Ukrainian NAS,  V. 39, № 4,  2017b, pp. 101-104.

Kangarli T.N., Aliyev F.A., Rahimov F.M., Murtuzov Z.M. Tectonics, recent geodynamics and seismicity of Azerbaijan part of the Greater Caucasus. Proceeding of European Geosciences Union (EGU) General Assembly. 2016. http://meetingorganizer.copernicus.org/EGU2016/EGU2016-385-1.pdf

Kangarli T.N., Akhundov A.B. Surface and deep structure of south slope of the Greater Caucasus. Soviet Geology, № 10, 1988, pp. 42-52 (in Russian).

Kangarli T.N., Veliyev G.O. Directions and results obtained from Ismailly-Shamakha test site research according to earthquake forecast. Earthquakes prediction. Dushanbe-Moscow, DONISh, № 10, 1988, pp. 172-185 (in Russian).

Khain V.Y. Regional geotectonics. Alpine Mediterranean belt. Nedra. Moscow, 1984, 344 p. (in Russian).

Khain V.Y. Tectonics of continents and oceans, 2000. Nauchniy mir. Moscow, 2001, 606 p. (in Russian).

Rzayev A.G., Yetirmishli G.D., Kazimova S.E. Reflection of geodynamic regime of variational tension of geomagnetic field (southern slope of the Greater Caucasus as a case study). Proceedings of ANAS. The sciences of Earth, № 4, 2013, pp. 3-15 (in Russian).

Telesca L., Kadirov F., Yetirmishli G., Safarov R., Babayev G., Ismaylova S. Statistical analysis of the 2003-2016 seismicity of Azerbaijan and surrounding areas. Journal of Seismology, 2017, pp. 1467-14-85: DOI 10.1007/s10950-017-9677-x

Yetirmishli G.J., Kazimova S.E., Ismailova S.S. Focal parameters of the Zagatala earthquake on May 7, 2012. Catalogue of Seismoforecasting research carried out in Azerbaijan territory in 2012. V.11, № 1, 2014, pp. 14-18.

Yetirmishli G.J., Kazimova S.E., Ismailova S.S., Garaveliyev E.S. 2016. Dynamic and kinematic characteristics of earthquakes of Sheki-Oguz region. Proceedings of ANAS. The Sciences of Earth, № 3-4, pp. 28-36.