Ratios of biogenic elements for distinguishing recent from fossil microorganisms | Zendy

Richard B. Hoover | Zendy

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Ratios of biogenic elements for distinguishing recent from fossil microorganisms

Author(s) -

Richard B. Hoover

Publication year - 2007

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.742285

Subject(s) - meteorite , macrofossil , astrobiology , biota , extremophile , cyanobacteria , permafrost , geology , microorganism , paleontology , ecology , biology , oceanography , bacteria , holocene

The ability to distinguish possible microfossils from recent biological contaminants is of great importance to Astrobiology. In this paper we discuss the application of the ratios of life critical biogenic elements (C/O; C/N; and C/S) as determined by Energy Dispersive X-ray Spectroscopy (EDS) to this problem. Biogenic element ratios are provided for a wide variety of living cyanobacteria and other microbial extremophiles, preserved herbarium materials, and ancient biota from the Antarctic Ice Cores and Siberian and Alaskan Permafrost for comparison with macrofossils and microfossils in ancient terrestrial rocks and carbonaceous meteorites.

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