Details

Autor(en) / Beteiligte

• Gellert, R.
• Rieder, R.
• Anderson, R. C.
• Brückner, J.
• Clark, B. C.
• Dreibus, G.
• Economou, T.
• Klingelhöfer, G.
• Lugmair, G. W.
• Ming, D. W.
• Squyres, S. W.
• d'Uston, C.
• Wänke, H.
• Yen, A.
• Zipfel, J.

Titel

Chemistry of Rocks and Soils in Gusev Crater from the Alpha Particle X-ray Spectrometer

Ist Teil von

• Science (American Association for the Advancement of Science), 2004-08, Vol.305 (5685), p.829-832

Ort / Verlag

United States: American Association for the Advancement of Science

Erscheinungsjahr

2004

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• The alpha particle x-ray spectrometer on the Spirit rover determined major and minor elements of soils and rocks in Gusev crater in order to unravel the crustal evolution of planet Mars. The composition of soils is similar to those at previous landing sites, as a result of global mixing and distribution by dust storms. Rocks (fresh surfaces exposed by the rock abrasion tool) resemble volcanic rocks of primitive basaltic composition with low intrinsic potassium contents. High abundance of bromine (up to 170 parts per million) in rocks may indicate the alteration of surfaces formed during a past period of aqueous activity in Gusev crater.