Micromorphological features of the fine earth and skeletal fractions of soils of West Antarctica in the areas of Russian Antarctic stations

E.V. Abakumov, E.I. Gagarina, V.F. Sapega, D.Y. Vlasov

Research output: Contribution to journalArticle

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Abstract

Micromorphological features of the fine earth and skeletal fractions of soils of West Antarctica forming under different conditions of pedogenesis have been studied in the areas of Russian Antarctic stations. The processes of mineral weathering and alteration of rock fragments are more pronounced in the Subantarctic soils with better developed humification and immobilization of iron compounds under conditions of surface overmoistening. The biogenic accumulative processes in the soils of King George Island result in the appearance of initial forms of humic plasma that have not been detected in the Antarctic soils in the areas of the Russkaya and Leningradskaya stations. Humus films on mineral grains are present in the soils of King George Island, and organic plasmic material is present in the ornithogenic soils under penguin guano on Lindsey Island. High latitude Antarctic soils may contain surface concentrations of organic matter; rock fragments are covered by iron oxides and soluble salts. The formation of a
Original languageEnglish
Pages (from-to)1219-1229
JournalEurasian Soil Science
Volume46
Issue number12
DOIs
StatePublished - 2013

Keywords

  • soils of West Antarctica
  • micromorphological features
  • soil processes
  • microprobe analysis

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