Bulk and stable isotopic compositions of carbonate minerals in Martian meteorite Allan Hills 84001: No proof of high formation temperature

被引：41
|
作者：
Treiman, AH
Romanek, CS
机构：
[1] Lunar & Planetary Inst, Houston, TX 77058 USA
[2] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA
来源：
METEORITICS & PLANETARY SCIENCE | 1998年 / 33卷 / 04期
关键词：
D O I：
10.1111/j.1945-5100.1998.tb01679.x
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Understanding the origin of carbonate minerals in the Martian meteorite Allan Hills (ALH) 84001 is crucial to evaluating the hypothesis that they contain traces of ancient Martian life. Using arguments based on chemical equilibria among carbonates and fluids, an origin at >650 degrees C (inimical to life) has been proposed. However, the bulk and stable isotopic compositions of the carbonate minerals are open to multiple interpretations and so lend no particular support to a high-temperature origin. Other methods (possibly less direct) will have to be used to determine the formation temperature of the carbonates in ALH 84001.
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收藏
页码：737 / 742
页数：6
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