Stratigraphy and Geological Correlation

, Volume 19, Issue 1, pp 102–107 | Cite as

The Volgian Praechetaites exoticus Zone: Geochronological range, stratigraphic position and interregional correlation (a Response to the Paper by S.V. Meledina et al. “On the Position of the Praechetaites exoticus Zone in the Volgian Stage”)

Discussion

Abstract

The Praechetaites exoticus Zone is characterized; its definition, geographical range and correlation in the Panboreal Superrealm are discussed. New evidence supports the Middle Volgian age of the Exoticus Zone. It is shown that the presence of the characteristic ammonoid assemblage allows the recognition of this zone in the sections of North Siberia and Spitzbergen. The suggested key characters defining the zone include the appearance of the ammonites from the P. exoticus group at the lower boundary and Craspedites ex gr. okensis at the upper boundary. The stratigraphic distribution of boreal genera of ammonites at the Middle-Upper Volgian boundary is discussed.

Keywords

Volgian Stage Panboreal correlation Praechetaites exoticus zone 

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References

  1. Alifirov, A.S., Ammonitovaya shkala volzhskogo yarusa Zapadnoi Sibiri i ee paleontologicheskoe obosnovanie, Stratigr. Geol. Korrelyatsiya, 2009, vol. 17, no. 6, pp. 77–89 [Stratigr. Geol. Correlation (Engl. Transl.), vol. 17, no. 6, pp. 632–644].Google Scholar
  2. Baraboshkin, E.Yu., Nizhnemelovoi ammonitovyi zonal’-nyi standart Boreal’nogo poyasa, Byull. Mosk. O-va Ispyt. Prir., Otd. Geol., 2004, vol. 79, no. 3, pp. 44–68.Google Scholar
  3. Houša, V., Pruner, P., Zakharov, V.A., et al., Boreal’noteticheskaya korrelyatsiya pogranichnogo yursko-melovogo intervala po magnito- i biostratigraficheskim dannym, Stratigr. Geol. Korrelyatsiya, 2007, vol. 15, no. 3, pp. 63–76 [Stratigr. Geol. Correlation (Engl. Transl.), vol. 15, no. 3, pp. 297–309].Google Scholar
  4. Meledina, S.V., Alifirov, A.S., and Shurygin, B.N., O polozhenii zony Praechetaites exotisus v volzhskom yaruse, Stratigr. Geol. Korrelyatsiya, 2010, vol. 18, no. 5, pp. 88–91 [Stratigr. Geol. Correlation (Engl. Transl.), vol. 18, no. 5, pp. 550–554].Google Scholar
  5. Mesezhnikov, M.S., Kimeridzhskii i volzhskii yarusy severa SSSR (Kimmeridgian and Volgian Stages of the Northern USSR), Leningrad: Nedra, 1984.Google Scholar
  6. Rogov, M.A., Novye dannye po ammonitam i stratigrafii volzhskogo yarusa Shpitsbergena Stratigr. Geol. Korrelyatsiya, 2010, vol. 18, no. 5, pp. 42–69 [Stratigr. Geol. Correlation (Engl. Transl.), vol. 18, no. 5, pp. 505–531].Google Scholar
  7. Rogov M.A. and Zakharov V.A. Ammonite and Bivalve-based Biostratigraphy and Correlation of the Volgian Stage through the Northern Hemisphere: State-of-Art and Tasks for Further Research. Sci. China. 2009. Ser. D. Earth Sci., vol. 12, pp. 1890–1909.Google Scholar
  8. Saks, V.N., (red.) Opornyi razrez verkhneyurskikh otlozhenii basseina r. Khety (Khatangskaya vpadina) (Reference Section of the Upper Jurassic Beds in the Basin of the Kheta River (Khatanga Depression), Leningrad: Nauka, 1969.Google Scholar
  9. Shul’gina, N.I., Titonskie ammonity Severnoi Sibiri, in Problemy paleontologicheskogo obosnovaniya detal’noi stratigrafii mezozoya Sibiri i Dal’nego Vostoka (Totonian Ammonites of the Northern Siberia), Leningrad: Nauka, 1967, pp. 131–177.Google Scholar
  10. Surlyk F. Submarine fan sedimentation along fault-escarpments on tilted fault-blocks (Jurassic-Cretaceous boundary, East Greenland). Grønl. Geol. Unders. 1978, no. 128, pp. 1–108.Google Scholar
  11. Zakharov, V.A. and Rogov, M.A., Verkhnevolzhskii pod”-yarus na severe Vostochnoi Sibiri (p-ov Nordvik) i ego panboreal’naya korrelyatsiya po ammonitam, Stratigr. Geol. Korrelyatsiya, 2008, vol. 16, no. 4, pp. 81–94 [Stratigr. Geol. Correlation (Engl. Transl.), vol. 16, no. 4, pp. 423–436].Google Scholar
  12. Zakharov, V.A., Nal’nyaeva, T.I., and Shul’gina, N.I., Novye dannye po biostratigrafii verkhneyurskikh i nizhnemelovykh otlozhenii na poluostrove Paksa, Anabarskii zaliv (sever Srednei Sibiri), Tr. IGiG SO AN SSSR, 1983, no. 528, pp. 56–99.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  1. 1.Geological InstituteRussian Academy of SciencesMoscowRussia

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