Kangarli T.N., Garayeva Т.J., Mehdiyeva Z.N., Novruzov Z.A.

Ministry of Science and Education of the Republic of Azerbaijan, Institute of Geology and Geophysics, Department of Dynamic Geology, Azerbaijan, 119, H.Javid av., Baku, AZ1073: sadiqovataxmina@mail.ru

DOI: 10.35714/ggistrat20260100022

Summary. The article presents a detailed stratigraphical division of the Jurassic complex of the continental shelf of the North Caucasian margin of the Eurasia. The stratigraphy of Jurassic rocks in this region, which corresponds to the southern margin of the Scythian platform, has not been well studied. On the other hand, paleomagnetic research has never been conducted in this area before. The studied region is located on the northern flank of the southeastern part of the mountain-folded system of the Greater Caucasus. To study the paleomagnetic properties of the Jurassic rocks, 80 oriented samples were collected from the Tahirjalchay section. The magnetic susceptibility and the natural remnant magnetization of deposits vary between 0.6 x 10^-3-1.6 x 10^-3 BS and 2.9 x 10^-3-16.9 x 10^-3 A/m, respectively. The average value of the permanent component indicates that the magnetization is close to its initial value and can therefore be used to compile a paleomagnetic profile. Based on paleomagnetic data, for the first time, the kinematic parameters of the Jurassic tectonic blocks on the southern margin of the Scythian Platform were studied. Analysis of the research materials reveals the extent of the angular displacement of the block. In the magnetostratigraphic analysis of the Tahirjalchay section, a total of 5 direct magnetization zones and 5 reverse zones were identified. Using these magnetic zones, the boundaries between different stratigraphic units were determined: Aalenian-Bajocian; Bajocian-Bathonian; Bathonian-Callovian; Callovian-Oxfordian; Oxfordian-Kimmeridgian.

Keywords: Tahirjalchay section, magnetic sensitivity, residual magnetization, paleomagnetism, magnetic polarity

REFERENCES

Enkin R.J. The direction–correction tilt test: an all-purpose tilt/fold test for paleomagnetic studies. Earth and Planetary Science Letters, Elsevier, 2003, Vol. 212, Issues 1-2, pp. 151-166, https://doi.org/10.1016/ S0012-821X(03)00238-3.

Garayeva T.J., Novruzov Z.A., Bagirova A.A. Paleotektonic reconstruction of blocks of Pliocene-Pleistocene sections of the Southeastern Parts of the Greater Caucasus. Proceeding of the I International scientific conference “Modern science: experience, traditions, innovations”, SC. Scientific conferences, Berlin. Germany, 2023. pp. 22-27, https//doi.org/10.5281/zenodo.7604871.

Garayeva T.J., Novruzov Z.A., Bagirova A.A. Geodynamics of the Azerbaijani part of the Lesser Caucasus according to paleomagnetic data. Mining information and analytical bulletin (scientific and technical journal). Moscow, No. 6, 2017, pp. 253-263. (in Russian)

Isaev B.M., Kangarli T.N., Rashidov Kh.A. et al. Report of 1:25000 Reconnaissance-Surveying Activities on the Southeastern Plunge of the Greater Caucasus for 1974-1976. State Information Archive of Azerbaijan Ministry of Ecology and Natural Resources. Baku, 1977. (in Russian)

Isayeva M.I., Garayeva T.J., Novruzov Z.A., Bagirova A.A. Deep structure and shear deformations of blocks of the Southern slope of the Greater Caucasus according to paleomagnetic data. Materials of the XX All-Russian conference with international participation. Voronezh, 2016, pp. 186-190. (in Russian)

Isayeva M.I., Garayeva T.J., Bagirova A.A. Solving geological and geophysical problems using paleomagnetic data. Geophysics News in Azerbaijan, Baku, No. 3-4, 2017, pp. 11-16. (in Russian)

Kangarli T.N., Balamedov Sh.R., Sadykhov E.F., Mehdiyeva Z.N. Lithological-Facies Zonality of Stratification of the Southeastern Caucasus Upper Jurassic Complex. Article 1 – Malmian Formations of Side Range Zone. Proceedings of Azerbaijan National Academy of Sciences, The Sciences of Earth, Issue 3, 2013, pp. 3-15, https://journalesgia.com/wp- content/files/2013/03/2013_03_.

Kangarli T.N., Mehdiyeva Z.N. Upper Jurassic complex of Greater Caucasus Side range: lithofacies and sedimentation (Azerbaijan). Stratigraphy and sedimentology of oil-gas basins, International scientific journal, Nafta-Press, Baku, No. 2, 2017, pp. 28-53, https://isjss.a-z.az/userfiles/uploads/978fe5b3da05e6016 876986bde43634f.pdf.

Khramov A.N., Goncharov G.I., Komissarova R.A. et al. Paleomagnetology. Edited by A.N.Khramov. Leningrad, Nedra, 1982, 312 p. (in Russian)

Mehdiyeva Z.N. Characteristics and сonditions of accumulation of the Upper Jurassic sediments in the South-Eastern Caucasus. Stratigraphy and sedimentology of oil-gas basins, International scientific journal, No. 1, 2022, pp. 56-65.

Novruzov Z.A., Isayeva M.I., Garayeva T.J., Bagirova A.A. Results of thermomagnetic analysis of Cretaceous deposits of the Lagich section (Vandam tectonic zone, southern slope of the Greater Caucasus, Azerbaijan). Geophysical Journal, Ukraine, Kyiv, Vol. 39, No. 3, 2017, pp. 91-96, https://doi.org/10.24028/gzh. 0203-3100.v39i3.2017.104029. (in Russian)

Novruzov Z.A., Garayeva T.J., Bagirova A.A. Paleoteknic reconstruction of the Karabakh uplift based on paleomagnetic data (Lok-Karabakh zone, Lesser Caucasus, Azerbaijan). SC scientific conferences, Proceeding of the 1^st international scientific conference “New problems of science and ways of their solution”, Geological and Mineralogical Sciences, Paris, France, 2023, pp. 15-18, https://doi.org/10.5281/zenodo.7628541.

Torsvik T.H., Van der Voo R., Preeden U., MacNiocaill C. et al. Phanerozoic polar wander, palaeogeography and dynamics. Earth-Science Reviews, Elsevier, Vol. 114, Issues 3-4, 2012, pp. 325-368, https://doi.org/ 10.1016/j.earscirev.2012.06.007.