| タイトル | Coordinated In Situ Nanosims Analyses of H-C-O Isotopes in ALH 84001 Carbonates |
| 本文（外部サイト） | http://hdl.handle.net/2060/20160002388 |
| 著者（英） | Usui, T.; Jones, J. H.; Wang, J.; Alexander, C. M. O'D.; Simon, J. I. |
| 発行日 | 2016-03-21 |
| 言語 | eng |
| 内容記述 | The surface geology and geomorphology of Mars indicate that it was once warm enough to maintain a large body of liquid water on its surface, though such a warm environment might have been transient. This study reports the hydrogen, carbon, and oxygen isotope compositions of the ancient atmosphere/hydrosphere of Mars based on in situ ion microprobe analyses of approximately 4 Ga-old carbonates in Allan Hills (ALH) 84001. The ALH 84001 carbonates are the most promising targets because they are thought to have formed from fluid that was closely associated with the Noachian atmosphere. While there are a number of carbon and oxygen isotope studies of the ALH 84001 carbonates, in situ hydrogen isotope analyses of these carbonates are limited and were reported more than a decade ago. Well-documented coordinated in situ analyses of carbon, oxygen and hydrogen isotopes provide an internally consistent dataset that can be used to constrain the nature of the Noachian atmosphere/hydrosphere and may eventually shed light on the hypothesis of ancient watery Mars. |
| NASA分類 | Lunar and Planetary Science and Exploration |
| レポートNO | JSC-CN-35206 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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