Fossil microorganisms and formation of early precambrian weathering crusts

M. M. Astafieva, A. Yu Rozanov, A. B. Vrevsky, N. A. Alfimova, V. A. Matrenichev, R. B. Hoover

Research outputpeer-review

2 Citations (Scopus)

Abstract

Weathering crusts are the only reliable evidence of the existence of continental conditions,. often they are the only source of information about exogenous processes and subsequently about conditions under which the development of biosphere occurred. A diverse complex of fossil microorganisms was discovered by Scanning Electron Microscope investigations. The chemical composition of the discovered fossils is identical to that of the host rocks and is represented by Si, Al, Fe, Ca and Mg. Probably, the microorganisms embedded in the rocks played the role of a catalyst. Decomposition of minerals, comprising rocks, and their transformation into clayey (argillaceous) minerals, occurred most likely under the influence of microorganisms. Perhaps the unique weathering crusts of Early Precambrian were formed due to interaction between specific composition of microorganism assemblage and conditions of hypergene transformations. So it is possible to speak about the colonization of land by microbes already at that time and about existence of single series from weathering crusts (primitive soils) to real soils.

Original languageEnglish
Title of host publicationInstruments and Methods for Astrobiology and Planetary Missions XII
DOIs
Publication statusPublished - 19 Nov 2009
EventInstruments and Methods for Astrobiology and Planetary Missions XII - San Diego, CA
Duration: 4 Aug 20096 Aug 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7441
ISSN (Print)0277-786X

Conference

ConferenceInstruments and Methods for Astrobiology and Planetary Missions XII
CountryUnited States
CitySan Diego, CA
Period4/08/096/08/09

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Astafieva, M. M., Rozanov, A. Y., Vrevsky, A. B., Alfimova, N. A., Matrenichev, V. A., & Hoover, R. B. (2009). Fossil microorganisms and formation of early precambrian weathering crusts. In Instruments and Methods for Astrobiology and Planetary Missions XII [744107] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7441). https://doi.org/10.1117/12.824535