دورية أكاديمية
The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars
| العنوان: | The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars |
|---|---|
| المؤلفون: | Mahaffy, P. R., Webster, C. R., Stern, J. C., Brunner, A. E., Atreya, S. K., Conrad, P. G., Domagal-Goldman, S., Eigenbrode, J. L., Flesch, G. J., Christensen, L. E., Franz, H. B., Freissinet, C., Glavin, D.P., Grotzinger, J. P., Jones, J. H., Leshin, L. A., Malespin, C., McAdam, A.C., Ming, D. W., Navarro-Gonzalez, R., Niles, P. B., Owen, T., Pavlov, A. A., Steele, A., Trainer, M. G., Williford, K. H., Wray, J. J. and the MSL Science Team, DLR Collaborator (MSL Science Team), Reitz G. |
| بيانات النشر: | American Association for the Advancement of Science (AAAS) |
| سنة النشر: | 2014 |
| المجموعة: | German Aerospace Center: elib - DLR electronic library |
| مصطلحات موضوعية: | Strahlenbiologie |
| الوصف: | The deuterium to hydrogen (D/H) ratio in strongly bound water or hydroxyl groups in ancient martian clays retains the imprint of the water of formation of these minerals. Curiosity’s Sample Analysis at Mars (SAM) experiment measured thermally evolved water and hydrogen gas released between 550°C and 950°C from samples of Hesperian era Gale crater smectite to determine this isotope ratio. The D/H value is 3.0 (±0.2) times the ratio in Standard Mean Ocean Water (SMOW). The D/H ratio in this ~3 billion year old mudstone that is half that of the present martian atmosphere but substantially higher than that expected in very early Mars indicates an extended history of hydrogen escape and desiccation of the planet. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| العلاقة: | Mahaffy, P. R. und Webster, C. R. und Stern, J. C. und Brunner, A. E. und Atreya, S. K. und Conrad, P. G. und Domagal-Goldman, S. und Eigenbrode, J. L. und Flesch, G. J. und Christensen, L. E. und Franz, H. B. und Freissinet, C. und Glavin, D.P. und Grotzinger, J. P. und Jones, J. H. und Leshin, L. A. und Malespin, C. und McAdam, A.C. und Ming, D. W. und Navarro-Gonzalez, R. und Niles, P. B. und Owen, T. und Pavlov, A. A. und Steele, A. und Trainer, M. G. und Williford, K. H. und Wray, J. J. and the MSL Science Team und DLR Collaborator (MSL Science Team), Reitz G. (2014) The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars. Science. American Association for the Advancement of Science (AAAS). DOI:10.1126/science.1260291 ISSN 0036-8075 |
| الإتاحة: | https://doi.org/10.1126/science.1260291Test http://elib.dlr.de/94269Test/ |
| رقم الانضمام: | edsbas.C6453CCC |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |