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Proceedings Paper

Microfossils in CI and CO carbonaceous meteorites
Author(s): Richard B. Hoover; Alexei Yu. Rozanov; Gregory A. Jerman; James Costen
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Paper Abstract

We have obtained x-ray spectral data and secondary/backscatter electron images of a suite of complex forms that we interpret as microfossils in several CI (Alais, Orgueil, and Tagish Lake) and CO3 (Rainbow and Dar al Gani 749) carbonaceous meteorites using the Field Emission and Environmental Scanning Electron Microscopes. Many of these embedded and lithified or carbonized forms are similar to photoautrophs (cyanobacteria or purple nonsulfur bacteria) or extinct phytoplankton (acritarchs and hystrichospheres) that are not considered likely post-arrival contaminants and therefore we interpret them as indigenous microfossils. We discuss the meteorites and provide images of several biogenic forms found embedded in freshly fractured meteorite matrix.

Paper Details

Date Published: 10 February 2004
PDF: 16 pages
Proc. SPIE 5163, Instruments, Methods, and Missions for Astrobiology VII, (10 February 2004); doi: 10.1117/12.513431
Show Author Affiliations
Richard B. Hoover, NASA National Space Science and Technology Ctr. (United States)
Alexei Yu. Rozanov, Paleontological Institute (Russia)
Gregory A. Jerman, NASA Marshall Space Flight Ctr. (United States)
James Costen, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 5163:
Instruments, Methods, and Missions for Astrobiology VII
Richard B. Hoover; Alexei Yu. Rozanov, Editor(s)

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