Composition features of the Upper Carboniferous-Lower Permian rocks of the Losinoostrov Fm. and the role of extrabasin sources in their formation (Subpolar Urals)

Research subject. The Upper Carboniferous-Lower Permian rocks of the Losinoostrov Formation of the Belsk-Eletsk structural-formational zone, exposed on the left bank of the Kozhim river, near the mouth of the stream Northnichael of the western slope of the Subpolar Urals. Methods. Optical and electron microscopic methods (including cathodoluminescence), chemical silicate, carbonate and X-ray diffraction analyses. Results and conclusions. The studied rocks are assigned to three main groups: mixtolites (rocks of mixed composition), carbonatoliths, and silicytolites with varieties.  Mixtoliths consist of three and four main components: carbonate, silty, argillaceous and siliceous. The variable ratio of rock-forming components of mixtolites was clearly reflected in the discriminative modular diagram. Here, fields of predominantly siliceous and silty mixolites (cluster I), predominantly argillaceous (cluster III), as well as transitional mixolites (cluster II) are identified. Relatively pure and silty-argillaceous-siliceous limestones were distinguished among carbonatoliths. According to the formed elements, pure limestones are divided into bioclastic and peloid-micritic. Silicytolites are represented by (1) radiolarites and radiolarian spongoliths; (2) silty-argillaceous silicytolites and (3) cherts (secondary siliceous formations). The established quantitative ratios of rock-forming components showed that more than half of the studied mixtoliths are composed mainly of the material of extrabasinal origin. Relatively high contents of extrabasinal fine material in carbonatoliths indicate a periodic decrement of the hydrodynamic regime during the accumulation of the upper part of the formation. The studied deposits were probably formed in distal and proximal ramp settings.

1. Anishchenko L.A., Klimenko S.S., Ryabinkina N.N., Ryabinkin S.V., Malyshev N.A., Kuplevich I.L., Zakharov A.A., Prozorov S.F., Antonov V.I., Ivanov V.V., Kuznetsov N.I., Yudin V.M. (2004) Organic Geochemistry and Petroleum Potential of Permian Sediments in the North of the Pre-Ural Foredeep. St.Petersburg, Nauka Publ., 213 p. (In Russ.)

2. Antoshkina A.I. (2003) Reef formation in the Paleozoic (the north of the Urals and adjacent areas). Ekaterinburg, UrO RAN Publ., 284 p. (In Russ.)

3. Antoshkina A.I., Saldin V.A., Ryabinkina N.N. (2006) Paleozoic deposits of the Subpolar Urals. Proceedings of the field workshop July 5-20, 2006. Syktyvkar, Geoprint Publ., 81 p. (In Russ.)

4. Antoshkina A.I., Saldin V.A., Sandula A.N., Nikulova N.Yu., Ponomarenko Ye.S., Shadrin A.N., Shebolkin D.N., Kaneva N.A. (2011) Paleozoic sedimentation on the outer zone of the shelf of the passive margin of the northeast of the European Platform. Syktyvkar, Geoprint Publ., 200 p. (In Russ.)

5. Aplin A.C., Macquaker J.H.S (2011) Mudstone diversity: Origin and implications for source, seal, and reservoir properties in petroleum systems. Amer. Assoc. Petrol. Geol. Bull., 95(12), 2031-2059.

6. Baraboshkin E.Yu. (2009) Condensed sections: terminology, types, formation conditions. Vestn. Moskovskogo Gos. Universiteta (MGU), ser. 4, Geol., No. 3, 13-20. (In Russ.)

7. Berger M.G. (1986) Terrigenous mineralogy. Moskcow, Nedra Publ., 227 p. (In Russ.)

8. Berner R.A., Leeuw J., Spiro B., Murchison D.G., Eglinton G. (1984) Sedimentary pyrite formation: An update. Geochim. Cosmochim., 48, 605-615.

9. Сamp W.K., Egenhoff S., Schieber J., Slatt A.M. (2016) A compositional classification for grain assemblages in fine-grained sediments and sedimentary rocks – discussion. J. Sediment. Res., 86, 1-5. http://dx.doi.org/10.2110/ jsr.2015.100

10. Chuvashov B.I., Dyupina G.V., Mizens G.A., Chernykh V.V. (1990) Reference sections of the Upper Carboniferous and Lower Permian of the western slope of the Urals and Cis-Urals. Sverdlovsk, UrO AN SSSR Publ., 368 p. (In Russ.)

11. Drits V.A., Kossovskaya A.G. (1991) Clay minerals: micas, chlorites. Moscow, Nauka Publ., 176 p. (Tr. GIN, vyp. 465). (In Russ.)

12. Eliseev A.I., Antoshkina A.I., Saldin V.A., Nikulova N.Yu., Kozyreva I.V., Sandula A.N. (2006) Paleozoic formations of the northeastern margin of the European Platform. Syktyvkar, 72 p. (Nauchnye doklady / Komi nauchnyi tsentr UrO RAN, vyp. 481). (In Russ.)

13. Emmings J.F., Dowey P.J., Taylor K.G., Davies S.J., Vane C.H., Moss-Hayes V., Rushton J.C. (2020) Origin and implications of early diagenetic quartz in the Mississippian Bowland Shale formation, Craven Basin, UK. Marine Petrol. Geol. https://doi.org/10.1016/j.marpetgeo.2020.104567

14. Fortunatova N.K., Kartseva O.A., Baranova A.V., Agafonova G.V., Ofman I.P. (2005) Atlas of structural components of carbonate rocks. Moacow, VNIGNI Publ., 440 p. (In Russ.)

15. Frolov V.T. (1992) Lithology. B. 1: Study guide. Moscow, MGU Publ., 336 p. (In Russ.)

16. Frolov V.T. (1993) Lithology. B. 2: Study guide. Moscpw, MGU Publ., 432 p. (In Russ.)

17. Geological Dictionary. (2010) Third edition, revised. and add. (Ch. ed. O.V. Petrov). T. 1. A–Y. St.Petersburg, VSEGEI Publ., 432 p. (In Russ.)

18. Guide for excursions to the Permian deposits of the river Kozhim. (1995) (Eds A.Yu. Rozanov, M.F. Bogoslovskaya, T.A. Grunt, T.B. Leonova, I.P. Morozova). Paleontol. Institute of the RAS, Moscow. (International Symposium “Problems of evolution of Permian marine biota” August 15-25, 1995), 45 p. (In Russ.)

19. Götze J., Plötze M., Habermann D. (2001) Origin, spectral characteristics and practical applications of the cathodoluminescence (CL) of quartz – a review. Mineral. Petrol., 71, 225-250.

20. Inkina N.S. (2019) New data about the Sezym Formation of the Polar Urals (Lower Permian). Dokl. Akad. Nauk, 489(1), 48-51. (In Russ.)

21. Kalmykov G.A., Balushkina N.S. (2017) Model of oil saturation of the pore space of rocks of the Bazhenov formation of Western Siberia and its use for assessing the resource potential. Moscow, GEOS Publ., 247 p. (In Russ.)

22. Kaźmierczak J., Coleman, M.L., Gruszczyński M., Kempe S. (1996) Cyanobacterial key to the genesis of micritic and peloidal limestones in ancient seas. Acta Palaeontol. Polonica, 41(4), 319-338.

23. Kontorovich A.E., Yan P.A., Zamirailova A.G., Kostyreva E.A., Eder V.G. (2016) Classification of rocks of the Bazhenov Formation. Geol. Geophys., 57(11), 2034-2043. https://doi.org/10.15372/GiG20161106

24. Kuz’kokova N.N., Mikhailova Z.P., Chermnykh V.A., Enokyan N.V., Gus’kov V.A., Virbitskas A.B., Manaeva G.G., Sosipatrova G.P., Shurekov N.A. (1980) Reference section of the Lower Permian of the Kozhim River (Ser. prepr. “Sci. dokl.”, iss. 58). Komi branch of the USSR Academy of Sciences, 53 p. (In Russ.)

25. Lazar O.R., Bohacs K.M., Macquaker J.H.S., Schieber J., Demko T.M. (2015) Capturing key attributes of finegrained sedimentary rocks in outcrops, cores, and thin sections: nomenclature and description guidelines. J. Sediment. Res., 85, 230-246.

26. Lazar O.R., Bohacs K.M., Schieber J., Macquaker J.H.S., Demko T.M. (2022) Mudstone nomenclature. Sequence stratigraphy: Applications to fine-grained rocks. AAPG Memoir, 126, 21-34.

27. Loutit T.S., Hardenbol J., Vail P.R., Baum G.R. (1988) Condensed sections: the key to age dating and correlation of continental margin sequences. Sea-Level Changes – An Integrated Approach. SEPM Spec. Publ., (42), 183-216.

28. Macquaker J.H.S., Adams A.E. (2003) Maximizing information from fine-grained sedimentary rocks: An inclusive Nomenclature for mudstones. J. Sediment. Res., 73(5), 735-744.

29. Macquaker J.H.S., Bentley S.J., Bohacs K.M. (2010) Waveenhanced sediment-gravity flows and mud dispersal across continental shelves: Reappraising sediment transport processes operating in ancient mudstone successions. Geology, 38(10), 947-950. https://doi.org/10.1130/ G31093.1

30. Macquaker J.H.S., Gawthorpe R.L. (1993) Mudstone lithofacies in the Kimmeridge Clay Formation, Wessex Basin, southern England: implications for the origin and controls of the distribution of mudstones. J. Sediment. Petrol., 63, 1129-1143.

31. Maslov A.V., Alekseev V.P. (2007) Features of the chemical composition and REE-Th-Sc-systematics of finegrained terrigenous rocks of the Lower Mesozoic of the Shaim oil and gas region (Western Siberia). Izv. Vuzov. Geol. i Razvedka, (2), 21-30. (In Russ.)

32. Milliken K. (2014) A compositional classification for grain assemblages in fine-grained sediments and sedimentary rocks. J. Sediment. Res., 84, 1185-1199.

33. Milliken K.L., Ergene S.M., Ozkan A. (2016) Quartz types, authigenic and detrital, in the Upper Cretaceous Eagle Ford Formation, South Texas, USA. Sediment. Geol., 339, 273-288. http://dx.doi.org/10.1016/j.sedgeo.2016.03.012 0037-0738

34. Milliken K.L., Olson T. (2017) Silica Diagenesis, Porosity Evolution and Mechanical Behavior In Siliceous Mudstones, Mowry Shale (Cretaceous), Rocky Mountains, U.S.A. J. Sediment. Res., 87(4), 366-387.

35. Peng J., Zeng Y., Yang Y., Yu L., Xu T. (2022) Discussion on classification and naming scheme of fine-grained sedimentary rocks. Petrol. Explor. Develop., 49(1), 121-132.

36. Picard M.D. (1971) Classification of fine-grained sedimentary rocks. J. Sediment. Petrol, 41(1), 179-195.

37. Potter P.E., Maynard J.B., Depetris P.J. (2005) Mud and Mudstones: Introduction and Overview. Springer-Verlag Berlin Heidelberg, 297 p.

38. Puchkov V.N. (2010) Geology of the Urals and Cis-Urals (topical issues of stratigraphy, tectonics, geodynamics and metallogeny). Ufa, DizainPoligrafServis Publ., 280 p. (In Russ.)

39. Reid R.P., Macintyre I.G. (1998) Carbonate recrystallization in shallow marine environments: a widespread diagenetic process forming micritized grains. J. Sediment. Res., 68(5), September, 928-946.

40. Reid R.P., Macintyre I.G., James N.P. (1990) Internal precipitation of microcrystalline carbonate: a fundamental problem for sedimentologists. Sediment. Geol., 68, 163-170.

41. Rickard D. (2012) Sedimentary Pyrite. Developments in Sedimentology. (Ed. D. Rickard). Elsevier, 233-278.

42. Saldin V.A. (2002) New data on the geology of the Lower Permian deposits of the river. Kozhym (Polar Urals). Litogenez i Geokhimiya Osadochnykh Formatsii Timano-Ural’skogo Regiona, (4), 11-33. (Tr. In-ta geologii Komi nauchnogo tsentra UrO RAN, vyp. 111). (In Russ.)

43. Saldin V.A. (2010) Spatial distribution of the Middle Carboniferous-Lower Permian organogenic structures and depression deposits in the north of the Urals. Reef geology. Materials of the international meeting. Syktyvkar, Geoprint Publ., 155-157. (In Russ.)

44. Saldin V.A. (2018) The history of sedimentation in the late Paleozoic in the north of the Urals and Pai-Khoi. Sedimentary geology of the Urals and adjacent regions: today and tomorrow. Materials of the 12th Ural Lithological Meeting. Ekaterinburg, IGG UrO RAN Publ., 306-311. (In Russ.)

45. Schieber J., Krinsley D., Riciputi L. (2000) Diagenetic origin of quartz silt in mudstones and implications of silica cycling. Nature, (406), 981-985.

46. Schieber J., Zimmerle W. (1998) The history and promise of shale research. Shales and Mudstones: Basin Studies, Sedimentology and Paleontology. V. 1. Stuttgart, Schweizerbart’sche Verlagsbuchhandlung, p. 1-10.

47. Stow D.A.V. (1981) Fine-grained sediments: Terminology. Q. J. Eng. Geol. Lond., 14, 243-244. (Downloaded from http://qjegh.lyellcollection.org/ at The City University on April 12, 2016).

48. Systematics and classifications of sedimentary rocks and their analogues. (1998) (Ed. V.N. Shvanov). St.Petersburg, Nedra Publ., 352 p. (In Russ.)

49. Taylor K.G., Macquaker J.H.S. (2014) Diagenetic alterations in a silt- and clayrich mudstone succession: an example from the Upper Cretaceous Mancos Shale of Utah, USA. Clay Miner., 49, 213-227.

50. Vikulova M.F., Burkov Yu.K., Vikulova M.F., Makedonov A.V., Tikhomirova N.Ya., Osipova A.I., Feofilova A.P., Kulakova G.V., Zemova N.N. (1973) Facies types of clay rocks (and their primary lithological features). Leningrad, Nedra Publ., 288 p. (In Russ.)

51. Yudin V.V. (1994) Orogeny of the northern Urals and PaiKhoi. Ekaterinburg, UIF “Nauka” Publ., 284 p. (In Russ.)

52. Yudovich Ya.E., Ketris M.P. (2000) Fundamentals of lithochemistry. St.Petersburg, Nauka Publ., 479 p. (In Russ.)