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Filaments in Carbonaceous Meteorites: Mineral Crystals, Modern Bio-Contaminants or Indigenous Microfossils of Trichomic Prokaryotes?Environmental (ESEM) and Field Emission Scanning Electron Microscopy (FESEM) investigations have resulted in the detection of a large number of complex filaments in a variety of carbonaceous meteorites. Many of the filaments were observed to be clearly embedded the rock matrix of freshly fractured interior surfaces of the meteorites. The high resolution images obtained combined with tilt and rotation of the stage provide 3-dimensional morphological and morphometric data for the filaments. Calibrated Energy Dispersive X-ray Spectroscopy (EDS) and 2-D elemental X-ray maps have provided information on the chemical compositions of the filaments and the minerals of the associated meteorite rock matrix. These observations are used to evaluate diverse hypotheses regarding the possible abiotic or biogenic nature of the filaments found embedded in these meteorites.
Document ID
20120001640
Document Type
Conference Paper
Authors
Hoover, Richard B. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Borisyak, A. A. (Academy of Sciences (Russia) Moscow, Russian Federation)
Date Acquired
August 25, 2013
Publication Date
August 23, 2011
Subject Category
Lunar and Planetary Science and Exploration
Report/Patent Number
M11-1094
Meeting Information
14th SPIE Astrobiology Conference(San Diego, CA)
Distribution Limits
Public
Copyright
Public Use Permitted.

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