Facies

, 10:145 | Cite as

TheChlamys coquinas in glacio-marine sediments (Pliocene) of King George Island, West Antarctica

  • Andrzej Gaździcki

Summary

The fossiliferous glacio-marine sequence of the “Pecten conglomerate” (=Low Head Member of the Polonez Cove Formation) of King George Island contains numerous pelecypod shells ofChlamys anderssoni (Hennig), which sometimes form lumachelles. These allochthonous coquinas, often with intraclasts, can be interpreted as storm deposits (tempestites). Their mode of distribution in the deposits of the Low Head Member suggests that sedimentation of this sequence was episodically interrupted by storm-generated energy events resulting in resedimentation of the biota assemblages.

Key Words

Facies Glacio-Marine Strata Storm deposits Paleoecology Pelecypods West Antarctica South Shetland Islands Tertiary Pliocene 

Chlamys-Schille in glaziomarinen Sedimenten (Pliozän) der King George Insel, Westantarktis

Zusammenfassung

Die fossilführende glaziomarine Serie des “Pecten-Konglomerats” (Low Head Einheit der Polonez Cove Formation) der King George Insel besteht hauptsächlich aus Schalen der MuschelChlamys anderssoni (Hennig), die manchmal Schillagen bilden. Diese allochthonen Lumachellen, die oft Intraklasten enthalten, können als Sturmsedimente (Tempestite) interpretiert werden. Ihr Verteilungsmuster innerhalb der Low Head Einheit deutet darauf hin, daß die Ablagerung dieser Serie episodisch von sturmbedingten hochenergetischen Ereignissen unterbrochen wurde, die eine Resedimentation von Muschelschalen verursachten.

References

  1. AIGNER, T. (1979): Schill-Tempestite in Oberen Muschelkalk (Trias, SW-Deutschland).—N. Jb. Geol. Paläont. Abh.157/3, 326–343, 7 Figs., StuttgartGoogle Scholar
  2. — (1982): Calcareous tempestites: storm-dominated stratification in Upper Muschelkalk limestones (Middle Triassic, SW-Germany).—In: EINSELE, G. & SEILACHER, A. (Eds.): Cyclic and Event Stratification: 180–198, 10 Figs., Berlin, Heidelberg, New York (Springer)Google Scholar
  3. AIGNER, T. & REINECK, H.-R. (1982): Proximality trends in modern storm sands from the Helgoland Bight (North Sea) and their implications for basin analysis.—Senckenbergiana marit.,14/5–6, 183–215, 3 Pls., 10 Figs., Frankfurt am MainGoogle Scholar
  4. ANDERSON, J.B., KURTZ, D., WEAVER, F. & WEAVER, M. (1982): Sedimentation on the West Antarctic continental margin.—In: CRADDOCK, C. (Ed.): Antarctic Geoscience: 1003–1012, 11 Figs., 1 Tab., Wisconsin (University Press)Google Scholar
  5. BARTON, C.M. (1965): The geology of South Shetland Island. III. The stratigraphy of King George Islands.—Sci. Repts Brit. Antarct. Surv.,44, 1–33, LondonGoogle Scholar
  6. BIRKENMAJER, K. (1980): Discovery of Pliocene glaciation on King George Island, South Shetland Islands (West Antarctica).—Bull. Acad. Polon. Sci. Terre,27/1–2, 59–67, 3 Figs., 1 Tab., VarsovieGoogle Scholar
  7. — (1982): Pliocene tillite-bearing succession of King George Island (South Shetland Islands, Antarctica).—Stud. Geol. Polon.,74, 7–72, 26 Figs., 3 Tab., WarszawaGoogle Scholar
  8. — (1983): Extent and course of the Pliocene glaciations in West Antarctica.—Bull. Acad. Polon. Sci. Terre,30/1–2, 9–20, 5 Figs., 3 Tab., VarsovieGoogle Scholar
  9. BŁASZYK, J. & GAŹDZICKI, A. (1980): Paleontological studies in the King George Island during the IIIrd Polish Antarctic Expedition of the Polish Academy of Sciences (1978–1979).— Prz. Geol.,5/325, 297–301, 1 Fig., WarszawaGoogle Scholar
  10. GAŹDZICKI, A. (1982): PliocenePecten conglomerate of King George Island (South Shetland Islands, West Antarctica).—4th Inter. Symp. Antarct. Earth Sci., (volume of abstracts), p. 66, AdelaideGoogle Scholar
  11. GAŹDZICKI, A., GRADZIŃSKI, R., POREBSKI, SZ.J. & WRONA, R. (1982): PholadidPenitella borings in glaciomarine sediments (Pliocene) of King George Island, Antarctica.—N. Jb. Geol. Paläont. Mh.,12, 723–735, 7 Figs., StuttgartGoogle Scholar
  12. GAŹDZICKI, A. & PUGACZEWSKA, H. (1983): Biota of the “Pecten conglomerate” (Polonez Cove Formation, Pliocene) of King George Island (South Shetland Islands, Antarctica).—Stud. Geol. Polon.,79, in press, 25 Pls., 1 Fig., WarszawaGoogle Scholar
  13. GAŹDZICKI, A. & WRONA, R. (1982): Paleontological studies carried out during the VthAntarctic Expedition of the Polish Academy of Sciences.—Prz. Geol.,2/346, 57–61, 5 Figs., WarszawaGoogle Scholar
  14. KREISA, R.D. (1981): Storm-generated sedimentary structures in subtidal marine facies with examples from the Middle and Upper Ordovician of southwestern Virginia.—J. Sed. Petr.,51/3, 823–848, 16 Figs., 1 Tab., TulsaGoogle Scholar
  15. MARSAGLIA, K.M. & KLEIN, G.D. (1983): The paleogeography of Paleozoic and Mesozoic storm depositional systems.—J. Geol.,91/2, 117–142, 14 Figs., 4 Tab., ChicagoCrossRefGoogle Scholar
  16. MIALL, A.D. (1983): Glaciomarine sedimentation in the Gowganda Formation (Huronian), Northern Ontario.—J. Sed. Petr.,53/2, 477–491, 6 Figs., 2 Tab., TulsaGoogle Scholar
  17. TOKARSKI, A.K., PAULO, A. & RUBINOWSKI, Z. (1981): Report on geological investigations on King George Island, South Shetland Islands (West Antarctica) in 1979/80.—Stud. Geol. Polon.,72, 133–140, WarszawaGoogle Scholar
  18. WRIGHT, R. & ANDERSON, J.B. (1982): The importance of sediment gravity flow to sediment transport and sorting in a glacial marine environment: Eastern Weddell Sea, Antarctica.— Geol. Soc. Am. Bull.,93, 951–963, 10 Figs., New YorkCrossRefGoogle Scholar

Copyright information

© Institut für Paläontologie, Universität Erlangen 1984

Authors and Affiliations

  • Andrzej Gaździcki
    • 1
  1. 1.Institute of PaleobiologyPolish Academy of SciencesWarszawa

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