Spectroscopic identification of carbonate minerals in the martian dust

被引：270

作者：

Bandfield, JL ^{[1
]}

Glotch, TD ^{[1
]}

Christensen, PR ^{[1
]}

机构：

[1] Arizona State Univ, Dept Geol Sci, Tempe, AZ 85287 USA

来源：

SCIENCE | 2003年 / 301卷 / 5636期

关键词：

D O I：

10.1126/science.1088054

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Thermal infrared spectra of the martian surface indicate the presence of small concentrations (similar to2 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.

引用

页码：1084 / 1087

页数：4

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