Sulfates in the north polar region of Mars detected by OMEGA/Mars express

被引：418

作者：

Langevin, Y ^{[1
]}

Poulet, F ^{[1
]}

Bibring, JP ^{[1
]}

Gondet, B ^{[1
]}

机构：

[1] Inst Astrophys Spatiale, F-91405 Orsay, France

来源：

SCIENCE | 2005年 / 307卷 / 5715期

关键词：

D O I：

10.1126/science.1109091

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 [理学]; 0710 [生物学]; 09 [农学];

摘要：

The Observatoire pour la Mineralogie, l'Eau, les Glaces, et l'Activite (OMEGA) imaging spectrometer observed the northern circumpolar regions of Mars at a resolution of a few kilometers. An extended region at 240degreesE, 85degreesN, with an area of 60 kilometers by 200 kilometers, exhibits absorptions at wavelengths of 1.45, 1.75, 1.94, 2.22, 2.26, and 2.48 micrometers. These signatures can be unambiguously attributed to calcium-rich sulfates, most likely gypsum. This region corresponds to the dark longitudinal dunes of Olympia Planitia. These observations reveal that Water alteration played a major role in the formation of the constituting minerals of northern circumpolar terrains.

引用

页码：1584 / 1586

页数：3

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