Spectroscopic identification of carbonate minerals in the martian dust

Joshua L. Bandfield, Timothy D. Glotch, Philip Christensen

Research output: Contribution to journalArticle

245 Scopus citations

Abstract

Thermal infrared spectra of the martian surface indicate the presence of small concentrations (∼2 to 5 weight %) of carbonates, specifically dominated by magnesite (MgCO3). The carbonates are widely distributed in the martian dust, and there is no indication of a concentrated source. The presence of small concentrations of carbonate minerals in the surface dust and in martian meteorites can sequester several bars of atmospheric carbon dioxide and may have been an important sink for a thicker carbon dioxide atmosphere in the martian past.

Original languageEnglish (US)
Pages (from-to)1084-1087
Number of pages4
JournalScience
Volume301
Issue number5636
DOIs
StatePublished - Aug 22 2003

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