Seismotectonic model of the Verkhoyansk-Kolyma orogenic region (Northeast of Russia)

Authors

  • Stogny G.A. Kuban State University, Krasnodar, Российская Федерация
  • Stogny V.V. Kuban State University, Krasnodar, Российская Федерация

UDC

550.348.098.64(571.56+571.65)

Abstract

Verkhoyansk-Kolima orogenic region (VKOR), which located in the North-Eastern part of the Russia, is marked by a high seismic activity. In this region more than 20 thousand earthquakes are registered. The centers of the earthquakes are placed in the whole interval of the Earth's crust (4-40 km), while most of seismic activity is in the middle and upper of her layers. In the problem of creation of the seismotectonic model of the VKOR Earth's crust the active faults of the sedimentary complex are best of all studied, at the same time the role of the structure elements of crystally basement is practically not investigated. The article begins with the description of the located conformity to natural laws in the centers of strong earthquakes ($M>5$) with elements of the VKOR crystal basement structure. The block structure of the Earth's crust, which was well grounded on the results of the complex interpretation of the gravity and magnetic fields with take attention of the petrophysics criterions structure-material complexes is chosen as basis model. The VKOR crystal basement contain the north-eastern part of the Aldan-Stanovoy geoblock and Verkhoyanskiy geoblock, which consist of the North-Verkhoyanskiy, South-Verkhoyanskiy, Adiacha-Nerskiy and Ayan-Uriakhskiy megablocks. Maximal number of the VKOR strong earthquakes are registered on the Adiacha-Nerskiy megablock territory. Tectonic faults of the Adiacha-Nerskiy megablock have north-western strike such as strike of Eastverkhoyansk sutura, which delimited the North-Asia craton and Kolyma-Omolon microcontinent. This allow to offer, what forming of the Adiacha-Nerskiy megablock structure take place in the conditions of the Mesozoic collision between North-Asia craton and Kolyma-Omolon microcontinent. The process of the interaction of this tectonic structures, evidently, continues also at the present time, what is the reason of the forming in the Earth's crust fields of the tectonic strains and their relaxation on account of earthquakes. The results of this research make new data for the construction of the Earth's crust seismic-tectonic model on the level of its upper and middle parts. It is shown that the most seismo-dangerous territory is the central part of zone of the Eastverkhoyansk sutura, which controlled centers of the Andrey-Tassky (22.06.2008, $M=6.1$) and Abiyskiy (14.02.2013, $M=6.9$) earthquakes.

Keywords:

tectonic block, active fault, Earth's crust, Verkhoyansk-Kolyma orogenic region, seismotectonic model

Author Infos

Galina A. Stogny

д-р геол.-минерал. наук, профессор кафедры региональной и морской геологии Кубанского государственного университета

e-mail: stogny@newmail.ru

Valeriy V. Stogny

д-р геол.-минерал. наук, профессор кафедры геофизических методов поисков и разведки Кубанского государственного университета

e-mail: stogny_vv@mail.ru

References

  1. Schibaev S.V., Petrov A.F., Mackey K.D., Koz'min B.M., Petrunin S.V., Peresypkin D.M., Starkova N.N., Timirschin K.V. Sil'noe Abyjskoe zemletrajsenie 2013 goda na granitse Evraziatskoj i Severoamerikanskoj litosfernykh plit na Severo-Vostoke Yakutii [Strong Abiyskiy earthquake of the 2013 year on the border of Eurasia and North-America lithosphere plates on the North-East Russia]. In Geologiya i mineral'no-syr'evye resursy Severo-Vostoka Rossii [Geology and mineral resources of the North-East Russia]. Yakutsk, SVFU, 2014, p. 58. (In Russian)
  2. Grachev A.F. (Ed.) Noveyschaja tektonika, geodinamika i sejsmichnost' Severnoj Evrasii [Modern tectonics, geodynamics and seismicity of the North Eurasia]. Moscow, Probel Publ., 2000, 487 p. (In Russian)
  3. Parfenov L.M., Kuz'min M.I. (Eds.) Tektonika, geodinamika i metallogeniya Respubliki Sakha (Yakutiya) [Tectonics, geodynamics and metallogeny of the Sakha Republic (Yakutia)]. Moscow, MAIK "Nauka/Interperiodica" Publ., 2001, 571 p. (In Russian)
  4. Koz'min B.M. Seysmicheskie pojasa Yakutii i mekhanismy ochagov ikh zemletjasenij [Seismic Range of Yakutia and mechanisms of its earthquake focal]. Moscow, Nauka Publ., 1984, 127 p. (In Russian)
  5. Imaeva L.P., Koz'min B.M., Imaev V.S. Dinamika seysmogennych struktur Indigiro-Kolymskogo (Okhotskogo) segmenta zony khr. Cherskogo [Dynamics of seismogenic structures of the Indigirka-Kolyma (Okhotsk) segment of the Chersky Range zone]. Otechestvennaja geologija [Russian Geology], 2012, no 5, pp. 55-61. (In Russian)
  6. Imaeva L.P., Koz'min B.M., Imaev V.S. Seysmotektonika severo-vostochnogo segmenta zony khr. Cherskogo [Seismotectonics of the north-east segment of the Chersky Range zone]. Otechestvennaja geologija [Russian Geology], 2009, no 5, pp. 94-100. (In Russian)
  7. Imaeva L.P., Koz'min B.M., Imaev V.S. Dinamika ochagovykh zon sil'nykh zemletryasenij severo-vostochnogo flanga Momo-Selennyakhskikh vpadin [Dynamics of focal zones of strong earthquakes on the northeastern side of Moma-Sellennyakh basins]. Otechestvennaja geologija [Russian Geology], 2011, no. 5, pp. 113-119. (In Russian)
  8. Stognij G.A., Stognij V.V. Stroenie litosfery Verkhoyano-Kolymskoj orogennoj oblasti [Lithosphere structure within the Verkhoyansk-Kolymsky orogenic area]. Otechestvennaja geologija [Russian Geology], 2000, no. 5, pp. 41-44. (In Russian)
  9. Babechko V.A., Evdokimova O.V, Ryadchikov I.V., Lozovoy V.V., Fedorenko A.G., Kolesnikov M.N., Telyatnicov I.S., Grichenko D.V., Shishkin A.A., Uafa S.V., Vlasova M.S., Smirnova M.V. Razvitie noviykh naukouomkikh metodov monitoringa i prognoza sostojanija territoriy v seysmoopasniykh I opolzneopasniykh zonakh [The development of the new science intensive methods of the territories condition in seismic- and landslide-dangerous areas monitoring and forecast]. Ekologicheskiy vestnik nauchnykh tsentrov Chernomorskogo ekonomicheskogo sotrudnichestva [Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation], 2013, no. 3, p. 13-20. (In Russian)
  10. Stognij G.A., Stognij V.V. Geofisicheskiye polja vostochnoj chasti Severo-Asiatskogo kratona [Geophysical fields of North-Asia Eastern part craton]. Yakutsk, Sakhapoligrafisdat Publ., 2005, 174 p. (In Russian)
  11. Vaschilov Yu.Ja., Gajdaj N.K., Zimnikova T.P., Luchinina A.V., Liubomudrov V.V., Postnikova V.V., Sakhno O.V. Razlichija v glubinnoj structure magmatogennykh antiklinal'nykh podnjatij v rajonakh s razvitym i redutsirovannym "granitnym" sloem (Severo-Vostok Rossii) [Differences in deep structure of the magmatogenic anticlinal uplifts in the areas with development and reduced "granite" layer (North-East Russia)]. In Astenosfera i litosfera Severo-Vostoka Rossii (struktura, geokinematika, evolyutsiya) [Asthenosphere and Lithosphere of the North-East Russia (structure, geokinematics, evolution)]. Magadan, SVKNII DVO RAN Publ., 2003, p. 43-62. (In Russian)

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Issue

2014. No. 4

Pages

79-87

Submitted

2014-09-22

Published

2014-12-22

How to Cite

Stogny G.A., Stogny V.V. Seismotectonic model of the Verkhoyansk-Kolyma orogenic region (Northeast of Russia). Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation, 2014, no. 4, pp. 79-87. (In Russian)

Copyright (c) 2014 Stogny G.A., Stogny V.V.

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