Discovery of olivine in the Nili Fossae region of Mars

被引：251

作者：

Hoefen, TM

Clark, RN

Bandfield, JL

Smith, MD

Pearl, JC

Christensen, PR

机构：

[1] US Geol Survey, Denver, CO 80225 USA

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] Arizona State Univ, Tempe, AZ 85287 USA

来源：

SCIENCE | 2003年 / 302卷 / 5645期

关键词：

D O I：

10.1126/science.1089647

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：

We have detected a 30,000-square-kilometer area rich in olivine in the Nili Fossae region of Mars. Nili Fossae has been interpreted as a complex of grabens and fractures related to the formation of the Isidis impact basin. We propose that post-impact faulting of this area has exposed subsurface layers rich in olivine. Linear mixture analysis of Thermal Emission Spectrometer spectra shows surface exposures of 30% olivine, where the composition of the olivine ranges from Fo(30) to Fo(70).

引用

页码：627 / 630

页数：4

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