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GEOLOGY OF MINERAL DEPOSITS
ArticleName Geodynamic mechanisms of structure formation in the Caspian–Black Sea region
DOI 10.17580/gzh.2018.11.03
ArticleAuthor Kerimov V. Yu., Mustaev R. N., Serikova U. S., Dantsova K. I.
ArticleAuthorData

Sergo Ordzhonikidze Russian State Geological Prospecting University, Moscow, Russia:

V. Yu. Kerimov, Pro-Rector for Science, Professor, Doctor of Geologo-Mineralogical Sciences
R. N. Mustaev, Head of Basic and Applied Research Department, Associate Professor, Candidate of Geologo-Mineralogical Sciences, mustaevrn@mgri-rggru.ru
U. S. Serikova, Associate Professor, Candidate of Engineering Sciences

 

Gubkin Russian State University of Oil and Gas (National Research University), Moscow, Russia:
K. I. Dantsova, Assistant

Abstract

The most important features of the structure of the Caspian–Black Sea region is its stress state, as well as high and diverse geodynamic, volcanic, seismic and geo-fluid dynamic activity. The geodynamic activity is associated with various kinds of relaxation of fluid dynamic stresses, primarily intensive upward flows of various mobile fluids and their components and manifestation of thermobaric anomalies. A vivid manifestation of geodynamic activity is its explosive variety—sedimentary volcanism: mud, gas and oil, mixed, etc., which, in turn, determine the intensity of geo-fluid dynamics processes. The main research methods used in the work are: paleotectonic reconstructions, geomechanical modeling and numerical spatio–temporal basin modeling. The study of the mechanisms of the movement of plastic clay masses from overstressed synclinal zones to understressed weak pressure zone, namely, into the dome of the folds, shows that such displacements, including vertical movement, are possible mainly under conditions of culminating manifestations of anomalously high pore pressures and the related induced various geological processes having the corresponding gradients. In the Cenozoic basins of the Caspian–Black Sea region, the geodynamic mechanisms associated with geo-fluid dynamics processes owing to the elastoplastic properties of thick clay strata dominate under such conditions. In a more general case, it seems reasonable to come to an inference that one of the essential factors in the formation of the described types of folding in geosynclinal regions is the effect of anomalous pressures in regional geo-fluid dynamic processes. The geo-fluid dynamic activity of the Caspian–Black Sea region can be estimated by the frequency of eruption of mud volcanoes. All small-focus earthquakes are located exclusively within the geofluid-dynamically active zones. This means that geo-fluid-dynamic processes are one of the main mechanisms of small-focus seismicity. The energy and thickness of the fluid-generating processes in the source will characterize the strength of small-focus earthquakes and mud volcanoes.

keywords Geo-fluid dynamics, Caspian–Black Sea region, seismic activity, subsoil stress state, geomechanical model, dilatancy
References

1. Alizade A. A., Salaev S. G., Aliev A. I. Scientific Assessment of Petroleum Potential and Exploration Trends in Azerbaijan and in the South Caspian Basin. Baku : Elm, 1985. 250 p.
2. Guliyev I. S., Kerimov V. Yu., Osipov A. V., Mustaev R. N. Generation and accumulation of hydrocarbons at great depths under the Earth’s Crust. SOCAR Proceedings. 2017. No. 1. pp. 4–16.
3. Guliev I., Panahi B. Geodynamics of the deep sedimentary basin of the Caspian Sea region: paragenetic correlation of seismicity and mud volcanism. Geo-Marine Letters. 2004. Vol. 24, Iss. 3. pp. 169–176.
4. Kadirov F. A., Gadirov A. H. A gravity model of the deep structure of South Caspian Basin along submeridional profile Alborz–Absheron Sill. Global and Planetary Change. 2014. Vol. 114. pp. 66–74.
5. Bahlburg H., Breitkreuz C. Grundlagen der Geology. 2 Auflage. München : Elsevier GmbH, 2004. 403 p.
6. Parry R. H. G. Mohr Circles, Stress Paths and Geotechnics. 2nd ed. London : Son Press, 2004. 279 p.

7. Martynova G. S., Aliev A. A., Babaev F. R., Guliev I. S. Nanocolloid structures in crude oils from the mud volcanoes of Azerbaijan. Geochemistry International. 2013. Vol. 51, No. 9. pp. 764–766.
8. Kerimov V. Yu., Mustaev R. N., Yandarbiev N. Sh., Movsumzade E. M. Environment for the Formation of Shale Oil and Gas Accumulations in Low-Permeability Sequences of the Maikop Series, Fore-Caucasus. Oriental Journal of Chemistry. 2017. Vol. 33, No. 2. pp. 879–892.
9. Shnyukov Ye. F., Aliyev Ad. A., Rahmanov R. R. Mud volcanism of mediterranean, Black and Caspian Seas: specificity of development and manifestations. Geology and Mineral Resources of World Ocean. 2017. No. 2(48). pp. 5–25.
10. Huseynov D. A. Maturity of the hydrocarbon fluids and their deep stratigraphic sources in the South-Caspian Basin. Earth Science for Energy and Environment : Proceedings of the 77th EAGE Conference and Exhibition. Madrid, 2015.
11. Kerimov V. Yu., Mustaev R. N., Dmitrievsky S. S., Zaitsev V. A. Evaluation of secondary filtration parameters of low-permeability shale strata of the Maikop series of Central and Eastern Ciscaucasia by the results of geomechanics modeling. Oil Industry. 2016. No. 9. pp. 18–21.
12. Baloglanov E. E., Abbasov O. R., Akhundov R. V., Huseynov A. R., Abbasov K. A., Nuruyev I. M. Daily activity of mud volcanoes and geoecological risk: a case from Gaynarja mud volcano, Azerbaijan. European Journal of Natural History. 2017. No. 4. pp. 22–27.
13. Ramazanova E. L. Key structural characteristics of the Caspian Sea bottom. Alleya nauki. 2017. No. 11(1). pp. 381–384.
14. Lebedev S. A. The dynamics of the Caspian Sea based on satellite altimetry data. Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa. 2015. Vol. 12, No. 4. pp. 72–85.
15. Serebryakova V. I., Yermolina A. V. Optimization of the complex of geological and geophysical researches at different stages of exploration works in the water area of the Caspian Sea and adjacent regions. Geology, geography and global energy. 2016. No. 63(4). pp. 24–30.
16. Babaev R. R., Salaev N. S. The role of tectonic fractures in generation, conservation and decomposition of oil and gas in the productive strata of the west wall of the South Caspian Basin. Caucasian Oil and Gas Potential : Collection of Scientific Papers. Moscow : Nedra, 1988. pp. 87–92.

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