Ukrainian Antarctic Journal

No 16 (2017): Ukrainian Antarctic Journal
Articles

Late Quaternary climate variations in West Antarctica and their impact on the marine siliceous microalgae

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  • A. P. Olshtynska,
  • O. S. Ogienko
A. P. Olshtynska
Institute of Geological Sciences, National Academy of Sciences of Ukraine, 55-b O. Honchar Str., Kyiv, 01054, Ukraine
O. S. Ogienko
Institute of Geology, Taras Shevchenko National University of Kyiv, 90 Vasylkivska Str., Kyiv, 03022, Ukraine
DOI: https://doi.org/10.33275/1727-7485.16.2017.57
Published December 29, 2017
Keywords
  • paleoclimate,
  • South ocean,
  • diatoms,
  • Antarctic Peninsula
How to Cite
Olshtynska, A. P., & Ogienko, O. S. (2017). Late Quaternary climate variations in West Antarctica and their impact on the marine siliceous microalgae. Ukrainian Antarctic Journal, (16), 37-44. https://doi.org/10.33275/1727-7485.16.2017.57
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Abstract

Main objective is the reconstruction of late Quaternary climatic events in the northern and north-western parts of the Antarctic Peninsula shelf based on species variation, abundance and ecological structure of diatom complex in bottom sediments. Methods: siliceous microalgae were used as biomarkers of geologycal, paleogeographycal and facial events. Results: the reasons for changing of the diatom composition in bottom sediments were determined; paleogeographic reconstraction and chronology of the Late Quarter paleoclimatic trends in the region were investigated. Conclusions of the main paleoclimatic events of the Late Quarter within the northwestern shelf and in the southern part of the Skotia Sea are made. Two climatic phases are identified: «Little Ice Age» (900-500 years ago) with moderate icy conditions and the next phase of rapid modern warming.

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