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Detection of Silica-Rich Deposits on Mars

by Squyres, S.W , McCoy, T.J , Calvin, W , Gellert, R , Farmer, J.D , Yen, A , Wang, A , Ruff, S , Arvidson, R.E , Morris, R.V , McLennan, S.M , Clark, B.C , Bell, J.F. III , Crumpler, L , Schmidt, M.E , Ming, D.W , de Souza, P.A. Jr , Marais, D.J. Des

in Acid soils / Acid sulfate soils / Agricultural soils / bedrock / Comets / Cosmochemistry. Extraterrestrial geology / Earth sciences / Earth, ocean, space / Environmental conditions / environmental factors / Exact sciences and technology / Extraterrestrial Environment / Extraterrestrial geology / Geophysics / Hot Temperature / Hydrogen-Ion Concentration / Mars / Materials / microbial ecology / Mineralogy / Outcrops / Rocks / Silica / Silicon Dioxide / soil / Soil depth / Soil pollution / Space exploration / Spacecraft / Sulfates / Water

2008

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Detection of Silica-Rich Deposits on Mars

2008

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Detection of Silica-Rich Deposits on Mars

2008

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Journal Article

Detection of Silica-Rich Deposits on Mars

Squyres, S.W,

McCoy, T.J,

Calvin, W,

Gellert, R,

Farmer, J.D,

Yen, A,

Wang, A,

Ruff, S,

Arvidson, R.E,

Morris, R.V,

McLennan, S.M,

Clark, B.C,

Bell, J.F. III,

Crumpler, L,

Schmidt, M.E,

Ming, D.W,

de Souza, P.A. Jr,

Marais, D.J. Des

2008

Overview

Mineral deposits on the martian surface can elucidate ancient environmental conditions on the planet. Opaline silica deposits (as much as 91 weight percent SiO₂) have been found in association with volcanic materials by the Mars rover Spirit. The deposits are present both as light-toned soils and as bedrock. We interpret these materials to have formed under hydrothermal conditions and therefore to be strong indicators of a former aqueous environment. This discovery is important for understanding the past habitability of Mars because hydrothermal environments on Earth support thriving microbial ecosystems.

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Publisher

American Association for the Advancement of Science,The American Association for the Advancement of Science

Subject

Acid soils

/ Acid sulfate soils

/ Agricultural soils

/ bedrock

/ Comets

/ Cosmochemistry. Extraterrestrial geology

/ Earth sciences