| タイトル | Isotopic Evidence for a Martian Regolith Component in Martian Meteorites |
| 本文（外部サイト） | http://hdl.handle.net/2060/20090006828 |
| 著者（英） | Nyquist, L. E.; Sutton, S.; Rao, M. N.; Bogard, D. D.; Garrison, D. H. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2009-03-23 |
| 言語 | eng |
| 内容記述 | Noble gas measurements in gas-rich impact-melt (GRIM) glasses in EET79001 shergottite showed that their elemental and isotopic composition is similar to that of the Martian atmosphere [1-3]. The GRIM glasses contain large amounts of Martian atmospheric gases. Those measurements further suggested that the Kr isotopic composition of Martian atmosphere is approximately similar to that of solar Kr. The (80)Kr(sub n) - (80)Kr(sub M) mixing ratio in the Martian atmosphere reported here is approximately 3%. These neutron-capture reactions presumably occurred in the glass-precursor regolith materials containing Sm- and Br- bearing mineral phases near the EET79001/ Shergotty sites on Mars. The irradiated materials were mobilized into host rock voids either during shock-melting or possibly by earlier aeolian / fluvial activity. |
| NASA分類 | Lunar and Planetary Science and Exploration |
| 権利 | Copyright, Distribution as joint owner in the copyright |
