Biology
Scientific paper
Jan 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4939..191g&link_type=abstract
Instruments, Methods, and Missions for Astrobiology VI. Edited by Hoover, Richard B.; Rozanov, Alexei Yu.; Lipps, Jere H. Pr
Biology
Scientific paper
In this paper, the microscopic textures of clay minerals resemble of recent biomorphous layer silicate precipitates are described and the possible environment for their formation discussed. Fossilized biomorphous-like microstructures in clay precipitates in the Miocene and Pliocene basalt piles were identified by comparison with published data on bacterial forms, both living and fossilized. The sizes, shapes, and fabric of the mineral precipitates are the key factors in a successful analysis of biomorphous-like microstructures. The studied morphological types of biomorphous-like microstructures were: rod-like, spheres, filaments, hemispheres and films. The nature of formerly existing hydrothermal systems in the lava piles, has been reconstructed by studies of the present mineral paragenesis and by the analogy with modern hydrothermal mineral precipitation.
Geptner Alfred R.
Kristmannsdóttir Hrefna
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