30 January 2003 Microfossils, biominerals, and chemical biomarkers in meteorites
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Proceedings Volume 4939, Instruments, Methods, and Missions for Astrobiology VI; (2003) https://doi.org/10.1117/12.501868
Event: Instruments, Methods, and Missions for Astrobiology V, 2002, Moscow, Russian Federation
Abstract
The discovery of biominerals, chemical biomarkers and evidence of microfossils in the Mars meteorite (ALH84001) stimulated research into biomarkers, microbial extremophiles and provided impetus to the newly emerging fields of Astrobiology and Bacterial Paleontology. The debate following the ALH84001 results has highlighted the importance of developing methodologies for recognition of mineral and elemental bioindicators, chemical biomarkers and microfossils in terrestrial rocks and meteorites prior to sample return missions to comets, asteroids, and Mars. Comparative studies of living and fossil micro-organisms and biomarkers are vital to developing expertise needed to recognize indigenous biosignatures and recent contaminants. This paper reviews elemental and mineral bioindicators, chemical biomarkers and keropgen in terrestrial rocks and meteorites. Electron Microscopy images of hyperthermophilic nanobacteria, sulfur and sulfate reducing bacteria, and mineralized microfossils and kerogen found in-situ in carbonaceous meteorite rock matrix are presented.
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Richard B. Hoover, Richard B. Hoover, Alexei Yu. Rozanov, Alexei Yu. Rozanov, } "Microfossils, biominerals, and chemical biomarkers in meteorites", Proc. SPIE 4939, Instruments, Methods, and Missions for Astrobiology VI, (30 January 2003); doi: 10.1117/12.501868; https://doi.org/10.1117/12.501868
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