Articles | Volume 5, issue 2
https://doi.org/10.5194/se-5-641-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/se-5-641-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
09 Jul 2014
Research article |
| 09 Jul 2014
An experimental study of pyroxene crystallization during rapid cooling in a thermal gradient: application to komatiites
S. Bouquain
ISTerre, CNRS UMR5275, Université J. Fourier, BP53, 38041 Grenoble Cedex, France
N. T. Arndt
ISTerre, CNRS UMR5275, Université J. Fourier, BP53, 38041 Grenoble Cedex, France
F. Faure
Nancy Université, CNRS/INSU, CRPG, 15 rue Notre Dame des Pauvres, 54501 Vandoeuvre-lès-Nancy, France
G. Libourel
Nancy Université, CNRS/INSU, CRPG, 15 rue Notre Dame des Pauvres, 54501 Vandoeuvre-lès-Nancy, France
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M. Ledevin, N. Arndt, A. Davaille, R. Ledevin, and A. Simionovici
Solid Earth, 6, 253–269, https://doi.org/10.5194/se-6-253-2015, https://doi.org/10.5194/se-6-253-2015, 2015
Short summary
Short summary
We investigate the composition, physical and rheological properties of fluids at the origin of Palaeoarchean chert dikes in South Africa. The dikes formed by repetitive hydraulic fracturing as overpressured oceanic fluids were released at low temperatures as a siliceous slurry. The gelation capacity of silica conferred the chert precursor a viscoelastic, probably thixotrope behaviour. It is an additional step to understand fluid circulations towards the ocean floor, the habitat of early life.
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Solid Earth, 2, 219–243, https://doi.org/10.5194/se-2-219-2011, https://doi.org/10.5194/se-2-219-2011, 2011
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