Transactions of the Karelian Research Centre of the Russian Academy of Sciences (Nov 2017)

MICROFOSSILS FROM RELICT MESOARCHEAN PALEOSOL DEVELOPED ON KOMATIITES FROM KOIKARY AREA, CENTRAL KARELIA

  • Светлана Юрьевна Чаженгина,
  • Александра Владимировна Бакаева,
  • Зоя Павловна Рыбникова,
  • Павел Владимирович Медведев,
  • Сергей Анатольевич Светов,
  • Svetlana Chazhengina,
  • Alexandra Bakaeva,
  • Zoya Rybnikova,
  • Pavel Medvedev,
  • Sergey Svetov

DOI
https://doi.org/10.17076/geo683
Journal volume & issue
Vol. 0, no. 11
pp. 78 – 90

Abstract

Read online

Relics of the paleosol of Mesoarchean age (3000–2930 Ma) developed on tuffs and lavas of komatiites from Koikary Area (Central Karelia) were studied. Microscopic tubular and spherical structures morphologically similar to fossilized remnants of microorganisms were found in the preserved part of the crust profile, represented by a layer of chloritite. The nature of these micro structures and the possibility of their interpretation as acidophilic bacteria inhabiting the land in the zone of chemical weathering of volcanic rocks are discussed.

Keywords