Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 80870 10.2205/2024ES000900 25-летие Russian Journal of Earth Sciences 25th anniversary of the Russian Journal of Earth Sciences 25-летие Russian Journal of Earth Sciences The Cyclostratigraphy of the Eastern Paratethys Konkian: Zelensky Section (Taman Peninsula) The Cyclostratigraphy of the Eastern Paratethys Konkian: Zelensky Section (Taman Peninsula) https://orcid.org/0000-0001-6828-5629 Ростовцева Юлиана Валерьевна Rostovtseva Yu. V.

доктор геолого-минералогических наук;

doctor of geological and mineralogical sciences;

 Геофизический центр РАН Россия Geophysical Center of the RAS Russian Federation 29 02 2024 29 02 2024 24 1 1 6 15 10 2023 15 01 2024 https://ras.editorum.ru/en/nauka/article/80870/view

The Eastern Paratethys Konkian sedimentary successions of the Zelensky section (Taman peninsula, Russia) were investigated by cyclostratigraphy methods based on magnetic susceptibility measurements. Cyclostratigraphy is a new scientific direction in stratigraphy and sedimentology, the purpose of which is to identify astronomical cyclicity for the reconstruction geochronology using high-precision technologies. Time series analysis (Lomb-Scargle and REDFIT periodograms, wavelet) revealed statistically significant signals corresponding most likely to long-term insolation periodicities in studied sediments. In the deep-water Konkian sediments of the Zelensky section, the signal at 3.3 m corresponds to the 100-kyr eccentricity cycle. The astronomically tuned these sediments result in an average sedimentation rate of about 3.3 cm/kyr with the duration of accumulation of the Sartaganian and Veselyankian beds about 200 kyr. The obtained cyclostratigraphic results generally do not contradict the new data about the possible duration of the Konkian (Kartvelian, Sartaganian and Veselyankian beds) of about 750 kyr [Palcu et al., 2017].

The Eastern Paratethys Konkian sedimentary successions of the Zelensky section (Taman peninsula, Russia) were investigated by cyclostratigraphy methods based on magnetic susceptibility measurements. Cyclostratigraphy is a new scientific direction in stratigraphy and sedimentology, the purpose of which is to identify astronomical cyclicity for the reconstruction geochronology using high-precision technologies. Time series analysis (Lomb-Scargle and REDFIT periodograms, wavelet) revealed statistically significant signals corresponding most likely to long-term insolation periodicities in studied sediments. In the deep-water Konkian sediments of the Zelensky section, the signal at 3.3 m corresponds to the 100-kyr eccentricity cycle. The astronomically tuned these sediments result in an average sedimentation rate of about 3.3 cm/kyr with the duration of accumulation of the Sartaganian and Veselyankian beds about 200 kyr. The obtained cyclostratigraphic results generally do not contradict the new data about the possible duration of the Konkian (Kartvelian, Sartaganian and Veselyankian beds) of about 750 kyr [Palcu et al., 2017].

 Eastern Paratethys Konkian Taman peninsula Zelensky section cyclostratigraphy magnetic susceptibility Eastern Paratethys Konkian Taman peninsula Zelensky section cyclostratigraphy magnetic susceptibility This research was funded by budgetary funding of the Geophysical Center of RAS, adopted by the Ministry of Science and Higher Education of the Russian Federation (project 075-00764-22-00). Alena Rybkina and Alexsandra Rylova are thanked for their field support and fruitful discussions. This research was funded by budgetary funding of the Geophysical Center of RAS, adopted by the Ministry of Science and Higher Education of the Russian Federation (project 075-00764-22-00). Alena Rybkina and Alexsandra Rylova are thanked for their field support and fruitful discussions.

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