Detection of Hydrated Silicates in Crustal Outcrops in the Northern Plains of Mars

被引：123
作者：
Carter, J. [1 ]
Poulet, F. [1 ]
Bibring, J. -P. [1 ]
Murchie, S. [2 ]
机构：
[1] Univ Paris 11, CNRS, IAS, F-91405 Orsay, France
[2] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA
来源：
SCIENCE | 2010年 / 328卷 / 5986期
关键词：
SPECTRAL EVIDENCE; PHYLLOSILICATES; DIVERSITY; EVOLUTION; LOWLANDS; HISTORY; WATER;
D O I：
10.1126/science.1189013
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：
The composition of the ancient martian crust is a key ingredient in deciphering the environment and evolution of early Mars. We present an analysis of the composition of large craters in the martian northern plains based on data from spaceborne imaging spectrometers. Nine of the craters have excavated assemblages of phyllosilicates from ancient, Noachian crust buried beneath the plains' cover. The phyllosilicates are indistinguishable from those exposed in widespread locations in the southern highlands, demonstrating that liquid water once altered both hemispheres of Mars.
引用
收藏
页码：1682 / 1686
页数：5
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