Other
Scientific paper
Apr 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jgr...102.9135g&link_type=abstract
Journal of Geophysical Research, Volume 102, Issue E4, p. 9135-9144
Other
34
Planetology: Solar System Objects: Mars, Tectonophysics: Hydrothermal Systems, Geochemistry: Planetary Geochemistry, Geochemistry: Composition Of The Crust
Scientific paper
If hydrothermal systems existed on Mars, hydration of crustal rocks may have had the potential to affect the water budget of the planet. We have conducted geochemical model calculations to investigate the relative roles of host rock composition, temperature, water-to-rock ratio, and initial fluid oxygen fugacity on the mineralogy of hydrothermal alteration assemblages, as well as the effectiveness of alteration to store water in the crust as hydrous minerals. In order to place calculations for Mars in perspective, models of hydrothermal alteration of three genetically related Icelandic volcanics (a basalt, andesite, and rhyolite) are presented, together with results for compositions based on SNC meteorite samples (Shergotty and Chassigny). Temperatures from 150°C to 250°C, water-to-rock ratios from 0.1 to 1000, and two initial fluid oxygen fugacities are considered in the models. Model results for water-to-rock ratios less than 10 are emphasized because they are likely to be more applicable to Mars. In accord with studies of low-grade alteration of terrestrial rocks, we find that the major controls on hydrous mineral production are host rock composition and temperature. Over the range of conditions considered, the alteration of Shergotty shows the greatest potential for storing water as hydrous minerals, and the alteration of Icelandic rhyolite has the lowest potential.
Griffith Laura L.
Shock Everett L.
No associations
LandOfFree
Hydrothermal hydration of Martian crust: Illustration via geochemical model calculations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hydrothermal hydration of Martian crust: Illustration via geochemical model calculations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrothermal hydration of Martian crust: Illustration via geochemical model calculations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1319749