2005
DOI: 10.1016/j.gca.2005.01.020
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Incipient hydrothermal alteration of basalts and the origin of martian soil

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Cited by 17 publications
(20 citation statements)
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“…The mean composition of Icelandic rivers that results from the dissolution of primary basalts (Gislason and Arnórsson, 1993) is used for Fluid 5. Icelandic lava flows, which exhibit a relatively unaltered basaltic composition, have served as geological, geomorphological, and geochemical Mars analogues for decades (Allen et al, 1981;Nelson et al, 2005;Cousins et al, 2010;. Minissale et al (2000) measured the fluid composition of the moderately hydrothermal (48°C) Deccan flood basalt springs, sourced from up to 3 km depth.…”
Section: Martian Fluidsmentioning
confidence: 99%
“…The mean composition of Icelandic rivers that results from the dissolution of primary basalts (Gislason and Arnórsson, 1993) is used for Fluid 5. Icelandic lava flows, which exhibit a relatively unaltered basaltic composition, have served as geological, geomorphological, and geochemical Mars analogues for decades (Allen et al, 1981;Nelson et al, 2005;Cousins et al, 2010;. Minissale et al (2000) measured the fluid composition of the moderately hydrothermal (48°C) Deccan flood basalt springs, sourced from up to 3 km depth.…”
Section: Martian Fluidsmentioning
confidence: 99%
“…As with large volcanoes, the formation of large craters on Mars should have resulted in massive hydrothermal systems that lasted for tens to hundreds of thousands of years (Newsom, 1980;Rathbun and Squyres, 2002). Impact crater hydrothermal processes may have also contributed to the formation of the martian soil (Newsom et al, 1999;Nelson et al, 2005).…”
Section: B6 How Was the Chemistry And Mineralogy Of The Early Martiamentioning
confidence: 99%
“…Recent work on terrestrial analogues (Hagerty and Newsom, 2003) has shown that hydrothermal alteration can produce FeO-rich clay minerals, including saponite, that also have low CaO abundances and high FeO when compared with their basaltic protolith, which makes them ideal candidate components of the martian soil (Nelson et al, 2005). The presence of a hydrothermal alteration component is consistent with an origin for the soil in which aeolian erosion of hydrothermally altered FeO-rich basaltic rock preferentially removed the altered minerals, and the basaltic rock then became a geochemical sink for mobile elements, such as S and Cl, which would have been contributed by fluids, volcanic aerosols, or a combination of both processes.…”
Section: B6 How Was the Chemistry And Mineralogy Of The Early Martiamentioning
confidence: 99%
“…Hematite is common alteration product of iron-rich volcanic rocks. The formation and evolution processes of iron minerals are good indicators of the surface environment not only in the oxidative terrestrial environment but also in the Martian environment (Newsom and Hagerty, 1997;Christensen et al, 2000;Christensen and Ruff, 2004;Nelson et al, 2005;Morris et al, 2008). Terrestrial analogue to the Martian environment are also discussed on the basis of samples from Antarctic, Arctic, arid climate regions, an impact crater and basaltic igneous rocks (Allen et al, 1981;Berkley and Drake, 1981;Hagerty and Newsom, 2003;Bishop et al, 2007;Hausrath et al, 2008;Gaudin et al, 2011).…”
Section: Introductionmentioning
confidence: 99%