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Serpukhovian

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Serpukhovian

System Subsystem/
Series
Stage Age
(Ma)
Permian Cisuralian Asselian younger
Carboniferous Pennsylvanian Gzhelian 298.9–303.7
Kasimovian 303.7–307.0
Moscovian 307.0–315.2
Bashkirian 315.2–323.2
Mississippian Serpukhovian 323.2–330.9
Viséan 330.9–346.7
Tournaisian 346.7–358.9
Devonian Late Famennian older
Subdivision of the Carboniferous system according to the ICS.[1]

The Serpukhovian is in the ICS geologic timescale the uppermost stage or youngest age of the Mississippian, the lower subsystem of the Carboniferous. The Serpukhovian age lasted from 330.9 ± 0.2 Ma to 323.2 ± 0.4 Ma.[2] It is preceded by the Visean and is followed by the Bashkirian.

The Serpukhovian correlates with the lower part of the Namurian stage of European stratigraphy and the middle and upper parts of the Chesterian stage of North American stratigraphy.

Name and definition

The Serpukhovian stage was proposed in 1890 by Russian stratigrapher Sergei Nikitin and was introduced in the official stratigraphy of European Russia in 1974.[3] It was named after the city of Serpukhov, near Moscow. The ICS later used the upper Russian subdivisions of the Carboniferous in its international geologic time scale.

The base of the Serpukhovian is at the first appearance of the conodont Lochriea crusiformis. In 2007, no GSSP had been assigned to the Serpukhovian stage yet. The top of the stage (the base of the Pennsylvanian subsystem and Bashkirian stage) is at the first appearance of the conodont Declinognathodus nodiliferus.[4] It is also slightly above the first appearance of the foram Globivalvulina bulloides, genozone of the ammonoid genus Homoceras and the ammonoid biozone of Isohomoceras subglobosum.[5]

Subdivision

The Serpukhovian stage includes four conodont biozones:

  • Gnathodus postbilineatus Zone
  • Gnathodus bollandensis Zone
  • Lochriea cruciformis Zone
  • Lochriea ziegleri Zone

In Russian stratigraphy, the Serpukhovian is subdivided into three substages, from bottom to top: Tarusian, Steshevian, and Protvian, named after places near Serpukhov (see Tarusa, Protva). In British stratigraphy, the Serpukhovian (lower Namurian) contains three substages. These are from bottom to top: Pendleian, Arnsbergian and Chokierian (only the lower Chokierian falls in the Serpukhovian, the top falls in the Bashkirian).[6]

Sources & references

Notes

  1. ^
  2. ^ Gradstein et al. (2004)
  3. ^ Fedorowski (2009)
  4. ^ The GSSP for the Bashkirian was established by Lane et al. (1999)
  5. ^ Menning et al. (2006)
  6. ^ Heckel & Clayton (2006)

Literature

  • Fedorowsky, J.; 2009: Early Bashkirian Rugosa (Anthozoa) from the Donets Basin, Ukraine. Part 1. Introductory considerations and the genus Rotiphyllum Hudson, 1942, Acta Geologica Polonica 59(1), pp. 1–37.
  • Gradstein, F.M.; Ogg, J.G. & Smith, A.G.; 2004: A Geologic Time Scale 2004, Cambridge University Press.
  • Heckel, P.H. & Clayton, G.; 2006: The Carboniferous system, use of the new official names for the subsystems, series and stages, Geologica Acta 4(3), pp 403–407.
  • Lane, H.R.; Brenckle, P.L.; Baesemann, J.F. & Richards, B.; 1999: The IUGS boundary in the middle of the Carboniferous: Arrow Canyon, Nevada, USA, Episodes 22(4), pp 272–283.
  • Menning, 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.; Nemyrovska, 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), Palaeogeography, Palaeoclimatology, Palaeoecology 240(1-2): pp 318–372.
  • Nikitin, S.N.; 1890: Carboniferous deposits of the Moscow region and artesian waters near Moscow, Trudy Geologicheskogo Komiteta 5(5), pp. 1–182 (Russian).

External links

  • Carboniferous timescale at the website of the Norwegian network of offshore records of geology and stratigraphy
  • , Geowhen DatabaseSerpukhovian
  • The Serpukhovian age, www.palaeos.com
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