georesГеоресурсыGeoresources1608-50431608-5078Georesursy LLC10.18599/grs.2024.4.1geores-414Research ArticleГЕОЛОГО-ГЕОХИМИЧЕСКИЕ ИССЛЕДОВАНИЯ, ПОИСК И РАЗВЕДКА МЕСТОРОЖДЕНИЙ ПОЛЕЗНЫХ ИСКОПАЕМЫХGEOLOGICAL AND GEOCHEMICAL RESEARCH, PROSPECTING AND EXPLORATION OF DEPOSITSТерригенное, карбонатное и черносланцевое осадконакопление: прерывистая непрерывность осадочных процессов в девонских ландшафтах Волго-Уральской нефтяной провинцииFrom Siliciclastics to Carbonates and Black shales: Deciphering Sedimentary Continuity and Discontinuity in the Devonian Landscapes of the Volga-Ural Petroleum ProvinceСилантьевВ. В.SilantievV. V.

Владимир Владимирович Силантьев – доктор геол.минерал. наук, доцент, заведующий кафедрой палеонтологии и стратиграфии, Институт геологии и нефтегазовых технологий, Казанский (Приволжский) Федеральный университет; профессор, Филиал Казанского (Приволжского) ФУ в городе Джизаке.

420008, Казань, ул. Кремлевская, д. 18

Vladimir V. Silantiev – Dr. Sci. (Geology and Mineralogy), Professor, Head of Department of Paleontology and Stratigraphy, Institute of Geology and Petroleum Technology, Kazan Federal University; Professor, Kazan Federal University, Branch in Jizzakh

18, Kremlevskaya st., Kazan, 420008

Vladimir.Silantiev@kpfu.ruМифтахутдиноваД. Н.MiftakhutdinovaD. N.

Динара Надировна Мифтахутдинова – кандидат геол.-минерал. наук, старший преподаватель кафедры палеонтологии и стратиграфии, Институт геологии и нефтегазовых технологий, Казанский (Приволжский) Федеральный университет; доцент, Филиал Казанского (Приволжского) федерального университета в городе Джизаке.

420008, Казань, ул. Кремлевская, д. 18

Dinara N. Miftakhutdinova – Cand. Sci. (Geology and Mineralogy), Senior Lecturer of Department of Paleontology and Stratigraphy, Kazan Federal University; Lecturer, Kazan Federal University, Branch in Jizzakh

18, Kremlevskaya st., Kazan, 420008

Dinara.Miftakhutdinova@kpfu.ruНургалиеваН. Г.NurgalievaN. G.

Нурия Гавазовна Нургалиева – доктор геол.-минерал. наук, профессор кафедры геологии нефти и газа имени акад. А.А. Трофимука, Институт геологии и нефтегазовых технологий.

420008, Казань, ул. Кремлевская, д. 18

Nouria G. Nourgalieva – Dr. Sci. (Geology and Mineralogy), Professor, Department of Oil and Gas Geology, Institute of Geology and Petroleum Technology.

Kremlevskaya str., 18, Kazan, 420008

Nouria.Nourgalieva@kpfu.ruКазанский (Приволжский) федеральный университет; Филиал Казанского (Приволжского) федерального университета в г. ДжизакеРоссияKazan Federal University; Kazan Federal University, Branch in JizzakhRussian FederationКазанский (Приволжский) федеральный университетРоссияKazan Federal UniversityRussian Federation2024301220242646282Copyright © Силантьев В.В., Мифтахутдинова Д.Н., Нургалиева Н.Г., 20242024Силантьев В.В., Мифтахутдинова Д.Н., Нургалиева Н.Г.Silantiev V.V., Miftakhutdinova D.N., Nurgalieva N.G.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.geors.ru/jour/article/view/414

Анализ трех основных типов осадконакопления – терригенного, карбонатного и черносланцевого (доманикитного) – выявил особенности их прерывистости и/или непрерывности в различных фациальных обстановках среднего и позднего девона центральной части Волго-Уральской нефтяной провинции. Эти обстановки включают как прогибы и их склоны, так и мелководные участки, расположенные на тектонических сводах или локальных биогермовых возвышенностях.

Региональная зональность конодонтов, коррелируемая с Международной хроностратиграфической шкалой, подтверждает общую стратиграфическую полноту геологической летописи среднего и верхнего девона в данном регионе. Однако осадконакопление имело прерывистый характер, что позволяет говорить о так называемой «прерывистой непрерывности». В частности, накопление черных сланцев с высоким содержанием органического вещества, традиционно рассматриваемых как нефтематеринские породы, продолжалось более 29 млн лет – с позднего эйфеля до границы девона и карбона. Наиболее длительный перерыв в осадконакоплении черных сланцев (а также карбонатных осадков), составляющий около 2,5 млн лет, произошел в конце живетского яруса. Примечательно, что этот интервал включает наиболее продуктивные терригенные коллектора.

В период с раннего эйфеля до раннего франа (около 17 млн лет) терригенные отложения демонстрируют максимальные скорости накопления и наибольшую прерывистость, вызванную кратковременными эпизодами морских трансгрессий. Одновременно в прогибах формировались наиболее полные последовательности, представленные карбонатными и черносланцевыми осадками. В фамене (около 12 млн лет) терригенное осадконакопление полностью прекратилось, что привело к стабильному накоплению карбонатных осадков на склонах депрессий и в мелководных зонах; одновременно в глубоких осевых частях прогибов продолжалось осаждение осадков с высоким содержанием органического вещества.

Результаты подчеркивают, что типы осадконакопления, существовавшие в разных ландшафтах девонского морского бассейна, характеризовались сложными пространственными взаимосвязями и различной полнотой геологической летописи.

Analyses of the three predominant types of sedimentation – siliciclastic, carbonate and black shale – revealed their discontinuity/continuity across various facies environments within the Middle and Late Devonian of the central part of the Volga-Urals petroleum province. These environments include condensed and non-condensed depressions, slopes of depressions and shallow water settings located on tectonic arches or local biohermal uplifts.

The regional zonation of conodonts, correlated with the International chronostratigraphic chart, confirms the general stratigraphic completeness of the Middle-Upper Devonian geological record in this area. Meanwhile, sedimentation exhibited a discontinuous pattern, which enables to speak about the socalled “discontinuous continuity”. In particular, the sedimentation of organic-rich black shales, traditionally considered as oil-source rocks, lasted more than 29 million years, from the Late Eifelian up to the Devoniancarboniferous boundary. The longest hiatus (ca. 2.5 Ma) in the accumulation of black shales (as well as carbonates) took place at the end of the Givetian. Notably, this interval contains the most productive siliciclastic reservoirs.

During the Early Eifelian to Early Frasnian (ca. 17 Ma), siliciclastic sediments demonstrate the highest accumulation rates and the maximum discontinuity caused by short marine transgressive episodes. Simultaneously, the most complete sequences were deposited in the depressions where carbonate and black shale sediments accumulated. During the Famennian (ca. 12 Ma), siliciclastic sedimentation completely ceased, leading to the stable accumulation of carbonate sediments on the slopes of depressions and in shallow waters; the deposition of organic-rich black shales continued in the deep axial settings of the troughs. Our results highlight the complexity of the spatial relationship between various coexisting sedimentation types and the incompleteness of the geological record in different environments.

Волго-Уральская нефтяная провинциядевончерные сланцыкарбонатные осадкитерригенные осадкискорость осадконакопленияобстановкиVolga-Ural petroleum provinceDevonianblack shalescarbonatessiliciclasticsedimentationrateenvironmentsРабота выполнена при частичном финансировании за счет субсидии, выделенной Казанскому федеральному университету на выполнение государственного задания в сфере научной деятельности (проект № FZSM-2023-0023), и при частичной поддержке Министерства науки и высшего образования Российской Федерации по договору № 075-15-2022-299 в рамках программы развития НЦМУ «Рациональное освоение запасов жидких углеводородов планеты»This work was partly funded (D.N.M.) by the subsidy allocated to Kazan Federal University for the State assignment in the sphere of scientific activities (project no. FZSM-2023-0023) and was partly supported (V.V.S.) by the Ministry of Science and Higher Education of the Russian Federation under agreement no. 075-15-2022-299 within the framework of the development program for a world-class research center “Efficient development of the global liquid hydrocarbon reserves”ReferencesAliev M.M., Batanova G.P., Khachatryan R.O., Lyashenko A.I., Novozhilova S.I., Nazarenko A.M., Adler M.G., Fedorova T.I., Tyurikhin A.M., Mikhaylova N.A., (1978). Devonian deposits of the Volga-Ural oil and gas province. Moscow: Nedra Publ. (In Russ.)Aliev M.M., Batanova G.P., Khachatryan R.O., Lyashenko A.I., Novozhilova S.I., Nazarenko A.M., Adler M.G., Fedorova T.I., Tyurikhin A.M., Mikhaylova N.A., (1978). Devonian deposits of the Volga-Ural oil and gas province. Moscow: Nedra Publ. (In Russ.)Aristov V.A. (1988). Devonian conodonts of the central Devonian Field (Russian platform). Moscow: Nedra Publ. (In Russ.)Aristov V.A. (1988). Devonian conodonts of the central Devonian Field (Russian platform). Moscow: Nedra Publ. (In Russ.)Becker R.T., Marshall J.E.A., Da Silva A.-c., Agterberg F.P., Gradstein F.M., Ogg J.G. (2020). The Devonian Period. The Geological Time Scale. V. 2. Gradstein, F., Ogg, J.G., Schmitz, M.D., Ogg, G.M. (Eds.). Amsterdam: Elsevier, pp. 733–810. https://doi.org/10.1016/B978-0-12-824360-2.00022-XBecker R.T., Marshall J.E.A., Da Silva A.-c., Agterberg F.P., Gradstein F.M., Ogg J.G. (2020). The Devonian Period. The Geological Time Scale. V. 2. Gradstein, F., Ogg, J.G., Schmitz, M.D., Ogg, G.M. (Eds.). Amsterdam: Elsevier, pp. 733–810. https://doi.org/10.1016/B978-0-12-824360-2.00022-XBlakey R. (2021). DeepTimeMaps™. https://deeptimemaps.comBlakey R. (2021). DeepTimeMaps™. https://deeptimemaps.comBromley R.G., (1996). Trace fossils. Biology, taphonomy and applications. London: chapman and Hall. https://doi.org/10.1007/978-1-4899-2875-7Bromley R.G., (1996). Trace fossils. Biology, taphonomy and applications. London: chapman and Hall. https://doi.org/10.1007/978-1-4899-2875-7Buatois L., Mangano M.G. (2011). Ichnology. Organism-Substrate Interaction in Space and Time, cambridge University Press, cambridge. https://doi.org/10.1017/cBO9780511975622Buatois L., Mangano M.G. (2011). Ichnology. Organism-Substrate Interaction in Space and Time, cambridge University Press, cambridge. https://doi.org/10.1017/cBO9780511975622Bultynck P. (1975). conodontes de la formation de Fromelennes du Givetien de l’Ardenne franco-belge. Bull. del’Institut royal des Sci. naturelles de Belgique, Sci. de la terre, 50(10), pp. 1–30.Bultynck P. (1975). conodontes de la formation de Fromelennes du Givetien de l’Ardenne franco-belge. Bull. del’Institut royal des Sci. naturelles de Belgique, Sci. de la terre, 50(10), pp. 1–30.Chupakhina V.V., Korobova N.I., Kalmykov G.A., Zavyalova A.P., Karpushin M.U., Radchenko K.A. (2022). Different types of void space and quality of unconventional reservoirs in the Upper Devonian domanic high-carbon deposits of Mukhanovo-Erokhovskii trough. Georesursy = Georesources 24(2), pp. 139–149. (In Russ.) https://doi.org/10.18599/grs.2022.2.14Chupakhina V.V., Korobova N.I., Kalmykov G.A., Zavyalova A.P., Karpushin M.U., Radchenko K.A. (2022). Different types of void space and quality of unconventional reservoirs in the Upper Devonian domanic high-carbon deposits of Mukhanovo-Erokhovskii trough. Georesursy = Georesources 24(2), pp. 139–149. (In Russ.) https://doi.org/10.18599/grs.2022.2.14Croizé D., Renard F., Gratier J.-P. (2013). compaction and Porosity Reduction. carbonates: A Review of Observations, Theory, and Experiments. In: Dmowska, R. (Eds.). Advances in Geophysics, v. 54, pp. 181–238. https://doi.org/10.1016/B978-0-12-380940-7.00003-2Croizé D., Renard F., Gratier J.-P. (2013). compaction and Porosity Reduction. carbonates: A Review of Observations, Theory, and Experiments. In: Dmowska, R. (Eds.). Advances in Geophysics, v. 54, pp. 181–238. https://doi.org/10.1016/B978-0-12-380940-7.00003-2Danilova T.E. (2008). Atlas of rocks of the main oil-bearing horizons of the Paleozoic of the Republic of Tatarstan. Terrigenous rocks of Devonian and Lower carboniferous. Kazan: Pluton. (In Russ.)Danilova T.E. (2008). Atlas of rocks of the main oil-bearing horizons of the Paleozoic of the Republic of Tatarstan. Terrigenous rocks of Devonian and Lower carboniferous. Kazan: Pluton. (In Russ.)Decision of the Interdepartmental Regional Stratigraphic Meeting on the Middle and Upper Paleozoic of the Russian Platform with regional stratigraphic schemes (1988). Devonian system. Scheme of structural-facial zoning of the Devonian of the Russian Platform. Leningrad: VSEGEI Publ. (In Russ.)Decision of the Interdepartmental Regional Stratigraphic Meeting on the Middle and Upper Paleozoic of the Russian Platform with regional stratigraphic schemes (1988). Devonian system. Scheme of structural-facial zoning of the Devonian of the Russian Platform. Leningrad: VSEGEI Publ. (In Russ.)Droser M.D., Bottjer D.J. (1986). A semiquantitative field classification of ichnofabric. J. of Sediment. Petrolog., 56, pp. 556–559. https://doi.org/10.1306/212F89c2-2B24-11D7-8648000102c1865DDroser M.D., Bottjer D.J. (1986). A semiquantitative field classification of ichnofabric. J. of Sediment. Petrolog., 56, pp. 556–559. https://doi.org/10.1306/212F89c2-2B24-11D7-8648000102c1865DEmeis K.-C., Sakamoto T., Wehausen R., Brumsack H.-J. (2000a). The sapropel record of the eastern Mediterranean Sea—Results of Ocean Drilling Program Leg 160. Palaeogeogr. Palaeoclimatol. Palaeoecol., 158(3–4), pp. 371–395. https://doi.org/10.1016/S0031-0182(00)00059-6Emeis K.-C., Sakamoto T., Wehausen R., Brumsack H.-J. (2000a). The sapropel record of the eastern Mediterranean Sea—Results of Ocean Drilling Program Leg 160. Palaeogeogr. Palaeoclimatol. Palaeoecol., 158(3–4), pp. 371–395. https://doi.org/10.1016/S0031-0182(00)00059-6Emeis K.-C., Struck U., Schulz H.-M., Rosenberg R., Bernasconi S., Erlenkeuser H., Sakamoto T., Martinez-Ruiz F. (2000b). Temperature and salinity variations of Mediterranean Sea surface waters over the last 16,000 years from records of planktonic stable oxygen isotopes and alkenone unsaturation ratios. Palaeogeogr. Palaeoclimatol. Palaeoecol., 158(3–4), pp. 259–280. https://doi.org/10.1016/S0031-0182(00)00053-5Emeis K.-C., Struck U., Schulz H.-M., Rosenberg R., Bernasconi S., Erlenkeuser H., Sakamoto T., Martinez-Ruiz F. (2000b). Temperature and salinity variations of Mediterranean Sea surface waters over the last 16,000 years from records of planktonic stable oxygen isotopes and alkenone unsaturation ratios. Palaeogeogr. Palaeoclimatol. Palaeoecol., 158(3–4), pp. 259–280. https://doi.org/10.1016/S0031-0182(00)00053-5Emiliani c. (1966). Paleotemperature Analysis of caribbean cores P6304-8 and P6304-9 and a Generalized Temperature curve for the past 425,000 Years. The J. of Geol., 74(2), pp. 109–124. https://doi.org/10.1086/627150Emiliani c. (1966). Paleotemperature Analysis of caribbean cores P6304-8 and P6304-9 and a Generalized Temperature curve for the past 425,000 Years. The J. of Geol., 74(2), pp. 109–124. https://doi.org/10.1086/627150Flugel E. (2010). Micro Facies Analysis of carbonate Rocks. Analyses, Interpretation and Application. Berlin: Springer Verlag. https://doi.org/10.1007/978-3-642-03796-2Flugel E. (2010). Micro Facies Analysis of carbonate Rocks. Analyses, Interpretation and Application. Berlin: Springer Verlag. https://doi.org/10.1007/978-3-642-03796-2Fortunatova N.K., Zaytseva E.L., Kartseva O.A. (2013). Structure of Devonian terrigenous complex and position of Middle and Upper Devonian boundary in western Tatarstan. Bull. of Mosc. Soc. of nat. Geol. Ser., 88(2), pp. 22–49. (In Russ.)Fortunatova N.K., Zaytseva E.L., Kartseva O.A. (2013). Structure of Devonian terrigenous complex and position of Middle and Upper Devonian boundary in western Tatarstan. Bull. of Mosc. Soc. of nat. Geol. Ser., 88(2), pp. 22–49. (In Russ.)Fortunatova N.K., Zaytseva E.L., Bushueva M.A., Shvets-Taneta-Guriy A.G., Baranova A.V., Kononova L.I., Rakhimova E.V., Mikheeva A.I., Oleneva N.V., Mushin I.A. (2016). Stratigraphy of the Upper Devonian of the Volga-Ural subregion (materials for updating stratigraphic schemes). Moscow: All-Russian Scientific Research Geological Petroleum Institute. (In Russ.)Fortunatova N.K., Zaytseva E.L., Bushueva M.A., Shvets-Taneta-Guriy A.G., Baranova A.V., Kononova L.I., Rakhimova E.V., Mikheeva A.I., Oleneva N.V., Mushin I.A. (2016). Stratigraphy of the Upper Devonian of the Volga-Ural subregion (materials for updating stratigraphic schemes). Moscow: All-Russian Scientific Research Geological Petroleum Institute. (In Russ.)Fortunatova, N.K., Zaytseva, E.L, Bushueva, M.A., Shvets-TanetaGuriy, A.G., Baranova A.V., Kononova L.I., Rakhimova E.V., Mikheeva A.I., Oleneva N.V., Avdeeva A.A. (2018). Unified regional stratigraphic scheme of the Upper Devonian sediments of the Volga-Ural subregion. Explanatory note. Moscow: All-Russian Scientific Research Geological Petroleum Institute. (In Russ.)Fortunatova, N.K., Zaytseva, E.L, Bushueva, M.A., Shvets-TanetaGuriy, A.G., Baranova A.V., Kononova L.I., Rakhimova E.V., Mikheeva A.I., Oleneva N.V., Avdeeva A.A. (2018). Unified regional stratigraphic scheme of the Upper Devonian sediments of the Volga-Ural subregion. Explanatory note. Moscow: All-Russian Scientific Research Geological Petroleum Institute. (In Russ.)Gatovsky Y.A., Stupakova A.V., Kalmykov G.A., Korobova N.I., Suslova A.A., Sautkin R.S., Kalmykov D.G. (2015). New data on biostratigraphy and facies types sections of the domanik deposits (Upper Devonian) Volga-Urals Basin. Mosc. Univ. Geol. Bull. Ser. 4., (5), pp. 86–99. (In Russ.)Gatovsky Y.A., Stupakova A.V., Kalmykov G.A., Korobova N.I., Suslova A.A., Sautkin R.S., Kalmykov D.G. (2015). New data on biostratigraphy and facies types sections of the domanik deposits (Upper Devonian) Volga-Urals Basin. Mosc. Univ. Geol. Bull. Ser. 4., (5), pp. 86–99. (In Russ.)Golonka J. (2002). Plate-tectonic maps of the Phanerozoic. Soc. for Sediment. Geol. Special Publ., 72, pp. 21–75. https://doi.org/10.2110/pec.02.72.0021Golonka J. (2002). Plate-tectonic maps of the Phanerozoic. Soc. for Sediment. Geol. Special Publ., 72, pp. 21–75. https://doi.org/10.2110/ pec.02.72.0021Gorozhanina E.N., Gorozhanin V.M., Zagranovskaya D.E., Zakharova O.A. (2019). About the structure of the Kama-Kinel trough system. Proceedings of higher educational establishments Geology and Exploration, 3, pp. 9–20. (In Russ.) https://doi.org/10.32454/0016-7762-2019-3-9-20Gorozhanina E.N., Gorozhanin V.M., Zagranovskaya D.E., Zakharova O.A. (2019). About the structure of the Kama-Kinel trough system. Proceedings of higher educational establishments Geology and Exploration, 3, pp. 9–20. (In Russ.) https://doi.org/10.32454/0016-7762-2019-3-9-20Gradstein F., Ogg J.G., Schmitz M.D., Ogg G.M. (2020). The Geological Time Scale. V. 2. Amsterdam: Elsevier. https://doi.org/10.1016/c2020-1-02369-3Gradstein F., Ogg J.G., Schmitz M.D., Ogg G.M. (2020). The Geological Time Scale. V. 2. Amsterdam: Elsevier. https://doi.org/10.1016/ c2020-1-02369-3Gradstein F.M. Ogg J.G., Smith A.G. (2004). A Geologic Time Scale 2004. cambridge: cambridge University Press. https://doi.org/10.4095/215638Gradstein F.M. Ogg J.G., Smith A.G. (2004). A Geologic Time Scale 2004. cambridge: cambridge University Press. https://doi.org/10.4095/215638Gubareva V.S. (2003). Devonian system. In: Geology of Tatarstan: Stratigraphy and tectonics. Burov B.V. (Eds.). Moscow: GEOS, pp. 87–102. (In Russ.)Gubareva V.S. (2003). Devonian system. In: Geology of Tatarstan: Stratigraphy and tectonics. Burov B.V. (Eds.). Moscow: GEOS, pp. 87–102. (In Russ.)Kabanov P., Jiang c. (2020). Photic-zone euxinia and anoxic events in a Middle-Late Devonian shelfal sea of Panthalassan continental margin, NW canada: changing paradigm of Devonian Ocean and sea level fluctuations. Glob. Planet. Chang., 188, 103153. https://doi.org/10.1016/j.gloplacha.2020.103153Kabanov P., Jiang c. (2020). Photic-zone euxinia and anoxic events in a Middle-Late Devonian shelfal sea of Panthalassan continental margin, NW canada: changing paradigm of Devonian Ocean and sea level fluctuations. Glob. Planet. Chang., 188, 103153. https://doi.org/10.1016/j.gloplacha.2020.103153Kabanov P., Hauck T.E., Gouwy S.A., Grasby S.E., van der Boon A. (2023a). Oceanic anoxic events, photic-zone euxinia, and controversy of sea-level fluctuations during the Middle-Late Devonian. Earth-Sci. Rev., 241, 104415. https://doi.org/10.1016/j.earscirev.2023.104415Kabanov P., Hauck T.E., Gouwy S.A., Grasby S.E., van der Boon A. (2023a). Oceanic anoxic events, photic-zone euxinia, and controversy of sea-level fluctuations during the Middle-Late Devonian. Earth-Sci. Rev., 241, 104415. https://doi.org/10.1016/j.earscirev.2023.104415Kabanov P., Gouwy S.A., van der Boon A., Grasby S.E. (2023b). Nature of Devonian anoxic events based on multiproxy records from Panthalassa, NW canada. Glob. and Planet. Chang., 227, 104176. https://doi.org/10.1016/j.gloplacha.2023.104176Kabanov P., Gouwy S.A., van der Boon A., Grasby S.E. (2023b). Nature of Devonian anoxic events based on multiproxy records from Panthalassa, NW canada. Glob. and Planet. Chang., 227, 104176. https://doi.org/10.1016/j.gloplacha.2023.104176Karpushin M.Yu., Stoupakova A.V., Zavyalova A.P., Suslova A.A., chupakhina V.V., Radchenko K.A. (2022). Geological structure and oil and gas potential of Domanik deposits in the central part of the Volga-Ural oil and gas basin. Georesursy = Georesources, 24(2), pp. 129–138. (In Russ.) https://doi.org/10.18599/grs.2022.2.13Karpushin M.Yu., Stoupakova A.V., Zavyalova A.P., Suslova A.A., chupakhina V.V., Radchenko K.A. (2022). Geological structure and oil and gas potential of Domanik deposits in the central part of the Volga-Ural oil and gas basin. Georesursy = Georesources, 24(2), pp. 129–138. (In Russ.) https://doi.org/10.18599/grs.2022.2.13Keogh M.E., Törnqvist T.E., Kolker A.S., Erkens G., Bridgeman J.G. (2021). Organic matter accretion, shallow subsidence, and river delta sustainability. J. of Geophys. Res.: Earth Surf., 126, e2021JF006231. https://doi.org/10.1029/2021JF006231Keogh M.E., Törnqvist T.E., Kolker A.S., Erkens G., Bridgeman J.G. (2021). Organic matter accretion, shallow subsidence, and river delta sustainability. J. of Geophys. Res.: Earth Surf., 126, e2021JF006231. https://doi.org/10.1029/2021JF006231Khalymbadzha V.G., Chernysheva N.G. (1969а). Conodonts of the Upper Devonian deposits of the Volga-Kama region and their stratigraphic significance. Proceedings of the Geological Institute of Kazan. Kazan: Kazan University Press, v. 24, рр. 155–158. (In Russ.)Khalymbadzha V.G., Chernysheva N.G. (1969а). Conodonts of the Upper Devonian deposits of the Volga-Kama region and their stratigraphic significance. Proceedings of the Geological Institute of Kazan. Kazan: Kazan University Press, v. 24, рр. 155–158. (In Russ.)Khalymbadzha V.G., chernysheva N.G. (1969b) Stratigraphic significance of conodonts in the upper Devonian of the Volga-Kama region and their possible use for interregional correlation. Doklady Akademii Nauk SSSR, 184(5), рр. 1170–1173. (In Russ.)Khalymbadzha V.G., chernysheva N.G. (1969b) Stratigraphic significance of conodonts in the upper Devonian of the Volga-Kama region and their possible use for interregional correlation. Doklady Akademii Nauk SSSR, 184(5), рр. 1170–1173. (In Russ.)Khalymbadzha V.G., chernysheva N.G. (1970). conodonts of the genus Ancyrodella from the deposits of the East of the Russian Platform and the Western Urals and their stratigraphic significance. In: Biostratigraphy and paaleontology of Palaeozoic deposits of the East of the Russian Platform and Western Urals. Kazan: Kazan University, pp. 81–103. (In Russ.)Khalymbadzha V.G., chernysheva N.G. (1970). conodonts of the genus Ancyrodella from the deposits of the East of the Russian Platform and the Western Urals and their stratigraphic significance. In: Biostratigraphy and paaleontology of Palaeozoic deposits of the East of the Russian Platform and Western Urals. Kazan: Kazan University, pp. 81–103. (In Russ.)Khalymbadzha V.G. (1982). conodonts of the Upper Devonian of the eastern Russian Platform, Southern Timan, Polar Urals and their stratigraphic significance. Kazan: Kazan University Press, 212 р. (In Russ.)Khalymbadzha V.G. (1982). conodonts of the Upper Devonian of the eastern Russian Platform, Southern Timan, Polar Urals and their stratigraphic significance. Kazan: Kazan University Press, 212 р. (In Russ.)Khalymbadzha V.G. (2001). Stages of conodont development in the Late Devonian. Bulletin of the Moscow Society of Natural Scientists. Geological series, 76(5), рр. 33–37. (In Russ.)Khalymbadzha V.G. (2001). Stages of conodont development in the Late Devonian. Bulletin of the Moscow Society of Natural Scientists. Geological series, 76(5), рр. 33–37. (In Russ.)Kononova L.I., Kim S.Y. (2005). Eifelian conodonts from the central Russian platform. Paleontol. J., 39, Suppl. 2.Kononova L.I., Kim S.Y. (2005). Eifelian conodonts from the central Russian platform. Paleontol. J., 39, Suppl. 2.Kukal Z. (1971). Geology of Recent sediments. London: Academic Press. Liang X.P., Galushyn G.А., Filippov V.P. (2015). Conditions of Domanicites Formation in the South-Eastern Part of the Russian Platform. Georesursy = Georesources, 3(62), pp. 54–63. (In Russ.) http://dx.doi.org/10.18599/grs.62.3.22Kukal Z. (1971). Geology of Recent sediments. London: Academic Press. Liang X.P., Galushyn G.А., Filippov V.P. (2015). Conditions of Domanicites Formation in the South-Eastern Part of the Russian Platform. Georesursy = Georesources, 3(62), pp. 54–63. (In Russ.) http://dx.doi.org/10.18599/grs.62.3.22Liang X., Jin Z, Liu Q., Philippov V., Obryadchikov O., Zhong D., Uspensky B., Morozov V. (2020). Sedimentary characteristics and evolution of Domanik facies from the Devonian–carboniferous regression in the southern Volga-Ural Basin. Mar. and Petroleum Geol., 119, 104438. https://doi.org/10.1016/j.marpetgeo.2020.104438Liang X., Jin Z, Liu Q., Philippov V., Obryadchikov O., Zhong D., Uspensky B., Morozov V. (2020). Sedimentary characteristics and evolution of Domanik facies from the Devonian–carboniferous regression in the southern Volga-Ural Basin. Mar. and Petroleum Geol., 119, 104438. https://doi.org/10.1016/j.marpetgeo.2020.104438Littke R., Zieger L. (2020). Formation of Organic-Rich Sediments and Sedimentary Rocks. In: Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate. Handbook of Hydrocarbon and Lipid Microbiology. Wilkes, H. (Eds.). Springer, pp. 476–492. https://doi.org/10.1007/978-3-319-90569-314Littke R., Zieger L. (2020). Formation of Organic-Rich Sediments and Sedimentary Rocks. In: Hydrocarbons, Oils and Lipids: Diversity, Origin, Chemistry and Fate. Handbook of Hydrocarbon and Lipid Microbiology. Wilkes, H. (Eds.). Springer, pp. 476–492. https://doi.org/10.1007/978-3-319-90569-314Loshcheva Z.A., Magdeev M.Sh., Agafonov S.G., Fedotov M.V., Magdeeva O.V. (2017). A new look at the geological structure of the Pashian horizon (D3ps) of the Aznakaevskaya area of the Romashkinskoye oil field. Georesursy = Georesources, 19(1), pp. 21–26. (In Russ.) http://doi.org/10.18599/grs.19.1.4Loshcheva Z.A., Magdeev M.Sh., Agafonov S.G., Fedotov M.V., Magdeeva O.V. (2017). A new look at the geological structure of the Pashian horizon (D3ps) of the Aznakaevskaya area of the Romashkinskoye oil field. Georesursy = Georesources, 19(1), pp. 21–26. (In Russ.) http://doi.org/10.18599/grs.19.1.4Menning M., Alekseev A.S., chuvashov B.I., Davydov V.I., Devuyst F.-X., Forke H.c., Grunt T.A.; Hance L.; Heckel P.H., Izokh N.G., Jin Y.G., Jones P.J., Kotlyar G.V., Kozur H.W., Nemyrovskaya T.I., Schneider J.W., Wang X.D., Weddige K., Weyer D., Work D.M. (2006). Global time scale and regional stratigraphic reference scales of central and West Europe, East Europe, Tethys, South china, and North America as used in the Devonian-carboniferous-Permian correlation chart 2003 (DcP 2003). Palaeogeogr. Palaeoclimatol. Palaeoecol., 240(1–2), pp. 318–372. https://doi.org/10.1016/j.palaeo.2006.03.058Menning M., Alekseev A.S., chuvashov B.I., Davydov V.I., Devuyst F.-X., Forke H.c., Grunt T.A.; Hance L.; Heckel P.H., Izokh N.G., Jin Y.G., Jones P.J., Kotlyar G.V., Kozur H.W., Nemyrovskaya T.I., Schneider J.W., Wang X.D., Weddige K., Weyer D., Work D.M. (2006). Global time scale and regional stratigraphic reference scales of central and West Europe, East Europe, Tethys, South china, and North America as used in the Devonian-carboniferous-Permian correlation chart 2003 (DcP 2003). Palaeogeogr. Palaeoclimatol. Palaeoecol., 240(1–2), pp. 318–372. https://doi.org/10.1016/j.palaeo.2006.03.058Miftakhutdinova D.N. (2023). Using Ichnofossils to correlate OilBearing Deposits in the Devonian clastic Succession (Pashyian and Timanian Horizons) of the South Tatar Arch. Uchenye Zap. Kazan. Univ. Ser. Estest. Nauki., 165(4), pp. 688–700. (In Russ.) https://doi.org/10.26907/2542-064X.2023.4.688-700Miftakhutdinova D.N. (2023). Using Ichnofossils to correlate OilBearing Deposits in the Devonian clastic Succession (Pashyian and Timanian Horizons) of the South Tatar Arch. Uchenye Zap. Kazan. Univ. Ser. Estest. Nauki., 165(4), pp. 688–700. (In Russ.) https://doi.org/10.26907/2542-064X.2023.4.688-700Mikulash R., Dronov A.V. (2006). Paleoichnology is an introduction to the study of fossil traces of vital activity. Prague: Geological Institute of the Academy of Sciences of the czech Republic. (In Russ.)Mikulash R., Dronov A.V. (2006). Paleoichnology is an introduction to the study of fossil traces of vital activity. Prague: Geological Institute of the Academy of Sciences of the czech Republic. (In Russ.)Mkrtchyan O.M. (1980). Regularities of distribution of structural forms in the east of the Russian Platform. Moscow: Nauka. (In Russ.)Mkrtchyan O.M. (1980). Regularities of distribution of structural forms in the east of the Russian Platform. Moscow: Nauka. (In Russ.)Muslimov R.Kh., Abdulmazitov R.G., Khisamov R.B., Mironova L.M. (2007). Oil-and-gas content of the Palaeozoic of the Republic of Tatarstan. In: Oil-and-gas content of the Republic of Tatarstan. Geology and development of oil fields. Muslimov R.Kh. (Eds.). Kazan: Fen, v. 1, pp. 66–97. (In Russ.)Muslimov R.Kh., Abdulmazitov R.G., Khisamov R.B., Mironova L.M. (2007). Oil-and-gas content of the Palaeozoic of the Republic of Tatarstan. In: Oil-and-gas content of the Republic of Tatarstan. Geology and development of oil fields. Muslimov R.Kh. (Eds.). Kazan: Fen, v. 1, pp. 66–97. (In Russ.)Nazarova V.M., Kononova L.I. (2016). Markers of conodonts of the Middle Devonian of the Voronezh anteclise. The state of the stratigraphic base of the center and the southeast of the East European Platform: Proc. Meet. Moscow: All-Russian Scientific Research Geological Petroleum Institute, pp. 51–55. (In Russ.)Nazarova V.M., Kononova L.I. (2016). Markers of conodonts of the Middle Devonian of the Voronezh anteclise. The state of the stratigraphic base of the center and the southeast of the East European Platform: Proc. Meet. Moscow: All-Russian Scientific Research Geological Petroleum Institute, pp. 51–55. (In Russ.)Nazarova V.M., Kononova L.I. (2020). conodont complexes from the Zhivet deposits (Middle Devonian) of the Shchigry-16 well (Voronezh anteclise). PALEOSTRAT 2020. Annual meeting (scientific conference) of the Palaeontology Section of the Moscow Society of Naturalists and the Moscow Branch of the Palaeontological Society at the Russian Academy of Sciences. Moscow: Palaeontological Institute of the Russian Academy of Sciences, pp. 41–42. (In Russ.)Nazarova V.M., Kononova L.I. (2020). conodont complexes from the Zhivet deposits (Middle Devonian) of the Shchigry-16 well (Voronezh anteclise). PALEOSTRAT 2020. Annual meeting (scientific conference) of the Palaeontology Section of the Moscow Society of Naturalists and the Moscow Branch of the Palaeontological Society at the Russian Academy of Sciences. Moscow: Palaeontological Institute of the Russian Academy of Sciences, pp. 41–42. (In Russ.)Nikishin A.M., Ziegler P.A., Stephenson R., cloetingh S., Furne A., Fokin P.A., Ershov A.V., Bolotov S.N., Korotaev M., Alekseev A.S., Gorbachev V., Shipilov E.V., Lankreijer A.c., Bembinova E. & Shalimov I.V. (1996). Late Precambrian to Triassic history of the East European craton: dynamics of sedimentary basin evolution. Tectonophys., 268, pp. 23–63. https://doi.org/10.1016/S0040-1951(96)00228-4Nikishin A.M., Ziegler P.A., Stephenson R., cloetingh S., Furne A., Fokin P.A., Ershov A.V., Bolotov S.N., Korotaev M., Alekseev A.S., Gorbachev V., Shipilov E.V., Lankreijer A.c., Bembinova E. & Shalimov I.V. (1996). Late Precambrian to Triassic history of the East European craton: dynamics of sedimentary basin evolution. Tectonophys., 268, pp. 23–63. https://doi.org/10.1016/S0040-1951(96)00228-4Ovnatanova N.S., Kononova L.I. (2008). Frasnian conodonts from the Eastern Russian Platform. Paleontol. J., 42(10), pp. 997–1166. https://doi.org/10.1134/S0031030108100018Ovnatanova N.S., Kononova L.I. (2008). Frasnian conodonts from the Eastern Russian Platform. Paleontol. J., 42(10), pp. 997–1166. https://doi.org/10.1134/S0031030108100018Ovnatanova N.S., Kononova L.I., Kolesnik L.S., Gatovsky Yu.A. (2017). Upper Devonian conodonts of Northeastern European Russia. Paleontol. J., 51(10), pp. 973–1165. https://doi.org/10.1134/S003103011710001X Puchkov V.N. (2010). Geology of the Urals and cisurals (topical issues of stratigraphy, tectonics, geodynamics and metallogeny). DizaynPoligrafServis, Ufa. (In Russ.)Ovnatanova N.S., Kononova L.I., Kolesnik L.S., Gatovsky Yu.A. (2017). Upper Devonian conodonts of Northeastern European Russia. Paleontol. J., 51(10), pp. 973–1165. https://doi.org/10.1134/S003103011710001X Puchkov V.N. (2010). Geology of the Urals and cisurals (topical issues of stratigraphy, tectonics, geodynamics and metallogeny). DizaynPoligrafServis, Ufa. (In Russ.)Rohling E.J. (1994). Review and new aspects concerning the formation of eastern Mediterranean sapropels. Mar. Geol., 122(1–2), pp. 1–28. https://doi.org/10.1016/0025-3227(94)90202-XRohling E.J. (1994). Review and new aspects concerning the formation of eastern Mediterranean sapropels. Mar. Geol., 122(1–2), pp. 1–28. https://doi.org/10.1016/0025-3227(94)90202-XResolutions of the Interdepartmental Stratigraphic committee and its Standing commissions (2008). Saint Petersburg: VSEGEI Publ., is. 38. (In Russ.)Resolutions of the Interdepartmental Stratigraphic committee and its Standing commissions (2008). Saint Petersburg: VSEGEI Publ., is. 38. (In Russ.)Sandberg C.A, Ziegler W. (1996). Devonian conodont biochronology in geologic time calibration. Senckenbergiana Lethaea, 76, pp. 259–265. https://doi.org/10.1007/BF03042852Sandberg C.A, Ziegler W. (1996). Devonian conodont biochronology in geologic time calibration. Senckenbergiana Lethaea, 76, pp. 259–265. https://doi.org/10.1007/BF03042852Scotese C.R. (2021). PALEOMAP Project. http://www.scotese.com/earth.htm. http://www.scotese.com/newpage4.htm. http://www.scotese.com/late.htmScotese C.R. (2021). PALEOMAP Project. http://www.scotese.com/earth.htm. http://www.scotese.com/newpage4.htm. http://www.scotese.com/late.htmShinn E.A., Robbin D.M. (1983). Mechanical and chemical compaction in fine-grained shallow-water limestones. J. of Sediment. Petrolog., 53(2), pp. 595–618. https://doi.org/10.1306/212F8242-2B24-11D7-8648000102c1865DShinn E.A., Robbin D.M. (1983). Mechanical and chemical compaction in fine-grained shallow-water limestones. J. of Sediment. Petrolog., 53(2), pp. 595–618. https://doi.org/10.1306/212F8242-2B24-11D7-8648000102c1865DSilantiev V.V., Validov M.F., Miftakhutdinova D.N., Morozov V.P., Ganiev B.G., Lutfullin A.A., Shumatbaev K.D., Khabipov R.M., Nurgalieva N.G., Tolokonnikova Z.A., Korolev E.A., Sudakov V.A., Smirnova A.V., Golod K.A., Leontiev A.A., Shamsiev R.R., Noykin M.V., Kosarev V.E., Nikonorova D.A., Akhmetov R.F. (2022). Sedimentation model of the Middle Devonian clastic succession of the South Tatar Arch, Pashyian Regional stage, Volga-Ural Oil and Gas Province, Russia. Georesursy = Georesources, 24(4), pp. 12–39. (In Russ.) https://doi.org/10.18599/grs.2022.4.2Silantiev V.V., Validov M.F., Miftakhutdinova D.N., Morozov V.P., Ganiev B.G., Lutfullin A.A., Shumatbaev K.D., Khabipov R.M., Nurgalieva N.G., Tolokonnikova Z.A., Korolev E.A., Sudakov V.A., Smirnova A.V., Golod K.A., Leontiev A.A., Shamsiev R.R., Noykin M.V., Kosarev V.E., Nikonorova D.A., Akhmetov R.F. (2022). Sedimentation model of the Middle Devonian clastic succession of the South Tatar Arch, Pashyian Regional stage, Volga-Ural Oil and Gas Province, Russia. Georesursy = Georesources, 24(4), pp. 12–39. (In Russ.) https://doi.org/10.18599/grs.2022.4.2Silantiev V.V., Validov M.F., Miftakhutdinova D.N., Nourgalieva N.G., Korolev E.A., Ganiev B.G., Lutfullin A.A., Shumatbaev K.D., Khabipov R.M., Sudakov V.A., Akhmadullina Yu.A., Golod K.A., Leontev A.A., Shamsiev R.R., Nikonorova D.A., Krikun S.S., Noykin M.V., Abdullina E.A. (2023). Visean terrigenous sediments of the South Tatar Arch (Volga-Urals oil and gas bearing province) – multifacial filling of the karst surface of theSilantiev V.V., Validov M.F., Miftakhutdinova D.N., Nourgalieva N.G., Korolev E.A., Ganiev B.G., Lutfullin A.A., Shumatbaev K.D., Khabipov R.M., Sudakov V.A., Akhmadullina Yu.A., Golod K.A., Leontev A.A., Shamsiev R.R., Nikonorova D.A., Krikun S.S., Noykin M.V., Abdullina E.A. (2023). Visean terrigenous sediments of the South Tatar Arch (Volga-Urals oil and gas bearing province) – multifacial filling of the karst surface of theTournaisian isolated carbonate platform. Georesursy = Georesources, 25(4), pp. 3–28. (In Russ.) https://doi.org/10.18599/grs.2023.4.1Tournaisian isolated carbonate platform. Georesursy = Georesources, 25(4), pp. 3–28. (In Russ.) https://doi.org/10.18599/grs.2023.4.1Staffers, P., Degens, E.T., Trimonis, E.S. (1978). Stratigraphy and suggested ages of Black Sea sediments cored during Leg 42B. In: Initial Reports of the Deep Sea Drilling Project. Ross, D.A., Neprochnov, Y.P. (Eds.). Washington: U.S. Government Printing Office, v. 42, part. 2. pp. 483–488. https://doi.org/10.2973/dsdp.proc.42-2.112.1978Staffers, P., Degens, E.T., Trimonis, E.S. (1978). Stratigraphy and suggested ages of Black Sea sediments cored during Leg 42B. In: Initial Reports of the Deep Sea Drilling Project. Ross, D.A., Neprochnov, Y.P. (Eds.). Washington: U.S. Government Printing Office, v. 42, part. 2. pp. 483–488. https://doi.org/10.2973/dsdp.proc.42-2.112.1978Strakhov N.M. (1939). Domanik facies of the Southern Urals. Moscow: Academy of Sciences of the USSR. (In Russ.)Strakhov N.M. (1939). Domanik facies of the Southern Urals. Moscow: Academy of Sciences of the USSR. (In Russ.)Stupakova A.V., Fadeeva N.P., Kalmykov G.A., Bogomolov A.Kh., Kiryukhina T.A., Korobova N.I., Shardanova T.A., Suslova A.A., Sautkin R.S., Poludetkina E.N., Kozlova E.V., Mitronov D.V., Korkots F.V. (2015). criteria for oil and gas search in domanic deposits of the Volga-Ural basin. Georesursy = Georesources, 2(61), pp. 77–86. (In Russ.) http://dx.doi.org/10.18599/grs.61.2.7Stupakova A.V., Fadeeva N.P., Kalmykov G.A., Bogomolov A.Kh., Kiryukhina T.A., Korobova N.I., Shardanova T.A., Suslova A.A., Sautkin R.S., Poludetkina E.N., Kozlova E.V., Mitronov D.V., Korkots F.V. (2015). criteria for oil and gas search in domanic deposits of the Volga-Ural basin. Georesursy = Georesources, 2(61), pp. 77–86. (In Russ.) http://dx.doi.org/10.18599/grs.61.2.7Stupakova A.V., Kalmykov G.A., Korobova N.I., Fadeeva N.P., Gatovsky Yu.A., Suslova A.A., Sautkin R.S., Pronina N.V., Bolshakova M.A., Zavyalova A.P., chupakhina V.V., Petrakova N.N., Miftakhova A.A. (2017). Oil-Domanic deposits of the Volga-Ural basin – types of section, formation conditions and prospects of oil and gas potential. Georesursy = Georesources. Special Issue, part 1, pp. 112–124. (In Russ.) http://doi.org/10.18599/grs.19.12Stupakova A.V., Kalmykov G.A., Korobova N.I., Fadeeva N.P., Gatovsky Yu.A., Suslova A.A., Sautkin R.S., Pronina N.V., Bolshakova M.A., Zavyalova A.P., chupakhina V.V., Petrakova N.N., Miftakhova A.A. (2017). Oil-Domanic deposits of the Volga-Ural basin – types of section, formation conditions and prospects of oil and gas potential. Georesursy = Georesources. Special Issue, part 1, pp. 112–124. (In Russ.) http://doi.org/10.18599/grs.19.12Torsvik T.H., c ocks L.R.M. (2017). Earth History and Palaeogeography. cambridge: cambridge University Press. https://doi.org/10.1017/9781316225523Torsvik T.H., c ocks L.R.M. (2017). Earth History and Palaeogeography. cambridge: cambridge University Press. https://doi.org/10.1017/9781316225523Warning B., Brumsack H.J. (2000). Trace metal signatures of eastern Mediterranean sapropels. Palaeogeogr. Palaeoclimatol. Palaeoecol., 158(3–4), pp. 293–309. https://doi.org/10.1016/S0031-0182(00)00055-9Warning B., Brumsack H.J. (2000). Trace metal signatures of eastern Mediterranean sapropels. Palaeogeogr. Palaeoclimatol. Palaeoecol., 158(3–4), pp. 293–309. https://doi.org/10.1016/S0031-0182(00)00055-9Wignall P.B. (1994). Black shales. New York: Oxford University Press. Wignall P.B., Hallam A. (1991). Biofacies, stratigraphic distribution and depositional models of British onshore Jurassic black shales. In: Modern and ancient continental shelf anoxia. Tyson, R.V., Pearson, T.H. (Eds.). London: Geological Society, pp. 291–309. https://doi.org/10.1144/GSL.SP.1991.058.01.19Wignall P.B. (1994). Black shales. New York: Oxford University Press. Wignall P.B., Hallam A. (1991). Biofacies, stratigraphic distribution and depositional models of British onshore Jurassic black shales. In: Modern and ancient continental shelf anoxia. Tyson, R.V., Pearson, T.H. (Eds.). London: Geological Society, pp. 291–309. https://doi.org/10.1144/GSL.SP.1991.058.01.19Winston R.B. (1986). characteristics features and compaction of plant tissues traced from permineralized peat to coal in Pennsylvanian coals (Desmoinesian) from the Illinois basin. Int. J. of Coal Geol., 6(1), pp. 21–41. https://doi.org/10.1016/0166-5162(86)90023-6Winston R.B. (1986). characteristics features and compaction of plant tissues traced from permineralized peat to coal in Pennsylvanian coals (Desmoinesian) from the Illinois basin. Int. J. of Coal Geol., 6(1), pp. 21–41. https://doi.org/10.1016/0166-5162(86)90023-6Wittekindt H. (1966). Zur conodontenchronologie des Mitteldevons, in: Das Mitteldevon des Rheinischen Schiefergebirges, Ein Symposium. Fortschritte in der Geologie von Rheinland und Westfalen, 9, pp. 621–646.Wittekindt H. (1966). Zur conodontenchronologie des Mitteldevons, in: Das Mitteldevon des Rheinischen Schiefergebirges, Ein Symposium. Fortschritte in der Geologie von Rheinland und Westfalen, 9, pp. 621–646.Yousef I., Morozov V.P., Kolchugin A.N., Leontev A. (2023). Impact of microfacies and diagenesis on the reservoir quality of Upper Devonian carbonates in Southeast Tatarstan, Volga-Ural Basin, Russia. Petroleum Res. 8(2), pp. 244–255. https://doi.org/10.1016/j.ptlrs.2022.07.003Yousef I., Morozov V.P., Kolchugin A.N., Leontev A. (2023). Impact of microfacies and diagenesis on the reservoir quality of Upper Devonian carbonates in Southeast Tatarstan, Volga-Ural Basin, Russia. Petroleum Res. 8(2), pp. 244–255. https://doi.org/10.1016/j.ptlrs.2022.07.003Zavyalova A.P., Karpushin M.Yu., Stupakova A.V., Kalmykov G.A., chupakhina V.V., Korobova N.I., Borisova M.S., Radchenko K.A. (2023). Structure, formation conditions, oil and gas potential of Domanicoid highcarbon formation in the central and South-Eastern Parts of the Volga-Ural basin. Georesursy = Georesources, 25(2), pp. 123–139. (In Russ.) https://doi.org/10.18599/grs.2023.2.9Zavyalova A.P., Karpushin M.Yu., Stupakova A.V., Kalmykov G.A., chupakhina V.V., Korobova N.I., Borisova M.S., Radchenko K.A. (2023). Structure, formation conditions, oil and gas potential of Domanicoid highcarbon formation in the central and South-Eastern Parts of the Volga-Ural basin. Georesursy = Georesources, 25(2), pp. 123–139. (In Russ.) https://doi.org/10.18599/grs.2023.2.9Ziegler W. (1962). Taxionomie und Phylogenie oberdevonischer conodonten und ihre stratigraphische Bedeutung. Abh. Hess. L. Amt Bodenforsch, 38, pp. 1–166.Ziegler W. (1962). Taxionomie und Phylogenie oberdevonischer conodonten und ihre stratigraphische Bedeutung. Abh. Hess. L. Amt Bodenforsch, 38, pp. 1–166.Ziegler W. (1969). Eine neue conodontenfauna aus dem höchsten Oberdevon. Fortschritte Geologie von Rheinland und Westfalen, 17, pp. 179–191.Ziegler W. (1969). Eine neue conodontenfauna aus dem höchsten Oberdevon. Fortschritte Geologie von Rheinland und Westfalen, 17, pp. 179–191.Ziegler W. (1971). conodont Stratigraphy of the European Devonian. Geol. Soc. Am. Mem. Bould., 127, pp. 227–284. https://doi.org/10.1130/MEM127-p227Ziegler W. (1971). conodont Stratigraphy of the European Devonian. Geol. Soc. Am. Mem. Bould., 127, pp. 227–284. https://doi.org/10.1130/ MEM127-p227Ziegler W., Sandberg c. (1984). Palmatolepis-based revision of upper part of standard Late Devonian conodont zonation. Geol. Soc. of Am. Special Pap., l96, pp. 179–194.Ziegler W., Sandberg c. (1984). Palmatolepis-based revision of upper part of standard Late Devonian conodont zonation. Geol. Soc. of Am. Special Pap., l96, pp. 179–194.Ziegler W., Sandberg c. (1990). The Late Devonian Standard conodont Zonation. Cour. Forsch.-Inst. Senckenberg, 121, pp. 1–115.Ziegler W., Sandberg c. (1990). The Late Devonian Standard conodont Zonation. Cour. Forsch.-Inst. Senckenberg, 121, pp. 1–115.Zonal stratigraphy of the Phanerozoic of Russia (2006). Saint Petersburg: VSEGEI Publ. (In Russ.)Zonal stratigraphy of the Phanerozoic of Russia (2006). Saint Petersburg: VSEGEI Publ. (In Russ.)

The authors declare that there are no conflicts of interest present.