ИСТИНА

PALEOMAGNETIC STUDIES OF CARBONIFEROUS DEPOSITS OF THE RUSSIAN PLATFORM Iosifidi A. G.1,2, Sergienko E. S.3, Salnaia N. V.4, Otmas N. M.1, Zuravlev A. V.5, Mikhailova V. A.1, Popov V. V.1,3, Danilova A. V.1 1- All-Russia Petroleum Research Exploration Institute (VNIGRI), St. Petersburg, 191014 Russia 2- Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation, St. Petersburg Branch, St. Petersburg, 191023 Russia 3- St. Petersburg State University, St. Petersburg, 199034 Russia 4- Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia 5- Institute of Geology, Komi Science Center, Ural Branch of the Russian Academy of Sciences, Syktyvkar, Russia iosag@mail.ru Paleomagnetic studies of the Carboniferous deposits of the Russian Platform were started since the fifties of the last century. The quality of the available data does not always meet modern reliability criteria. In this paper, we present the results of paleomagnetic studies of the Carboniferous deposits of the Russian Platform, conducted in 2016-2018, which covers a time interval of 340 to 300 million years. During the stepwise thermal demagnetization four NRM components are isolated: component A (a present viscous component); the characteristic component C1 corresponding to the Carboniferous time, which in some cases correlates with the data of other researchers (a positive agreement test, class B); characteristic component P reflecting the Late Paleozoic remagnetization (mean Permian) and component C0, which indicates the presence of large particles or their aggregates in red clay. The main feature of the obtained data is the predominance of components of the natural remanent magnetization of the reverse polarity. Only in one section (Lyubytinsky district, Novgorod region) the bipolar component C1 is distinguished along the deposits of the Aleksin horizon of the Visean stage. The positions of the obtained paleomagnetic poles (component C1) show the movement of the Russian platform to the north with a clockwise rotation of 35 degrees and with a latitude offset of about 14 degrees. Comparison of the average paleomagnetic pole of the component P (N = 7, Lat = 48o, Long = 156o, A95 = 3o) with the one-age component P2 (N / n = 28/51, Lat = 47o, Long = 168o, A95 = 4o) on red clay from outcrops along the river Kamа allows estimating the possible shallow of the inclination of 6 degrees. The work was supported by the Russian Foundation for Basic Research under the project no. 16-05-00603a.