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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Formation of silica glaze rock coatings through water vapor interactions

Auteur(s) et Affiliation(s)

DORN, R.I.
School of Geographical Sciences and Urban Planning, Arizona State Univ., Tempe, Etats-Unis


Description :
A two decade-long laboratory experiment tested importance of high water vapor content in silica glaze formation. Twenty years of exposing basalt rock chips to 80% and 90% levels of relative humidity revealed that water vapor alone can generate silica glaze and may be an important factor in explaining why silica glaze is the dominant rock coating in humid warm drylands. In addition to adding a new dimension to the formation of terrestrial rock coatings, these findings may have importance in interpreting any coatings of amorphous silica found on Mars.


Type de document :
Article de périodique

Source :
Physical geography, issn : 0272-3646, 2012, vol. 33, n°. 1, p. 21-31, nombre de pages : 11, Références bibliographiques : 58 ref.

Date :
2012

Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis

Langue :
Anglais
Droits :
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