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Volatile, Isotope, and Organic Analysis of Martian Fines with the Mars Curiosity Rover.

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Title: Volatile, Isotope, and Organic Analysis of Martian Fines with the Mars Curiosity Rover.
Authors: Leshin, L. A., Mahaffy, P. R., Webster, C. R., Cabane, M., Coll, P., Conrad, P. G., Archer Jr., P. D., Atreya, S. K., Brunner, A. E., Buch, A., Eigenbrode, J. L., Flesch, G. J., Franz, H. B., Freissinet, C., Glavin, D. P., McAdam, A. C., Miller, K. E., Ming, D. W., Morris, R. V., Navarro-González, R.
Source: Science (pre-March 2025). 9/27/2013, Vol. 341 Issue 6153, p1-9. 9p.
Subjects: Curiosity (Spacecraft), Mars surface samples, Particulate matter, Gas analysis, Eolian processes, Carbon isotopes, Organic compound analysis, Water on Mars
Abstract: Samples from the Rocknest aeolian deposit were heated to ~835°C under helium flow and evolved gases analyzed by Curiosity's Sample Analysis at Mars instrument suite. H2O, SO2, CO2, and O2 were the major gases released. Water abundance (1.5 to 3 weight percent) and release temperature suggest that H2O is bound within an amorphous component of the sample. Decomposition of fine-grained Fe or Mg carbonate is the likely source of much of the evolved CO2. Evolved O2 is coincident with the release of Cl, suggesting that oxygen is produced from thermal decomposition of an oxychloride compound. Elevated δD values are consistent with recent atmospheric exchange. Carbon isotopes indicate multiple carbon sources in the fines. Several simple organic compounds were detected, but they are not definitively martian in origin. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Volatile, Isotope, and Organic Analysis of Martian Fines with the Mars Curiosity Rover.
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  Data: <searchLink fieldCode="AR" term="%22Leshin%2C+L%2E+A%2E%22">Leshin, L. A.</searchLink><br /><searchLink fieldCode="AR" term="%22Mahaffy%2C+P%2E+R%2E%22">Mahaffy, P. R.</searchLink><br /><searchLink fieldCode="AR" term="%22Webster%2C+C%2E+R%2E%22">Webster, C. R.</searchLink><br /><searchLink fieldCode="AR" term="%22Cabane%2C+M%2E%22">Cabane, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Coll%2C+P%2E%22">Coll, P.</searchLink><br /><searchLink fieldCode="AR" term="%22Conrad%2C+P%2E+G%2E%22">Conrad, P. G.</searchLink><br /><searchLink fieldCode="AR" term="%22Archer+Jr%2E%2C+P%2E+D%2E%22">Archer Jr., P. D.</searchLink><br /><searchLink fieldCode="AR" term="%22Atreya%2C+S%2E+K%2E%22">Atreya, S. K.</searchLink><br /><searchLink fieldCode="AR" term="%22Brunner%2C+A%2E+E%2E%22">Brunner, A. E.</searchLink><br /><searchLink fieldCode="AR" term="%22Buch%2C+A%2E%22">Buch, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Eigenbrode%2C+J%2E+L%2E%22">Eigenbrode, J. L.</searchLink><br /><searchLink fieldCode="AR" term="%22Flesch%2C+G%2E+J%2E%22">Flesch, G. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Franz%2C+H%2E+B%2E%22">Franz, H. B.</searchLink><br /><searchLink fieldCode="AR" term="%22Freissinet%2C+C%2E%22">Freissinet, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Glavin%2C+D%2E+P%2E%22">Glavin, D. P.</searchLink><br /><searchLink fieldCode="AR" term="%22McAdam%2C+A%2E+C%2E%22">McAdam, A. C.</searchLink><br /><searchLink fieldCode="AR" term="%22Miller%2C+K%2E+E%2E%22">Miller, K. E.</searchLink><br /><searchLink fieldCode="AR" term="%22Ming%2C+D%2E+W%2E%22">Ming, D. W.</searchLink><br /><searchLink fieldCode="AR" term="%22Morris%2C+R%2E+V%2E%22">Morris, R. V.</searchLink><br /><searchLink fieldCode="AR" term="%22Navarro-González%2C+R%2E%22">Navarro-González, R.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 9/27/2013, Vol. 341 Issue 6153, p1-9. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Curiosity+%28Spacecraft%29%22">Curiosity (Spacecraft)</searchLink><br /><searchLink fieldCode="DE" term="%22Mars+surface+samples%22">Mars surface samples</searchLink><br /><searchLink fieldCode="DE" term="%22Particulate+matter%22">Particulate matter</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+analysis%22">Gas analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Eolian+processes%22">Eolian processes</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+isotopes%22">Carbon isotopes</searchLink><br /><searchLink fieldCode="DE" term="%22Organic+compound+analysis%22">Organic compound analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Water+on+Mars%22">Water on Mars</searchLink>
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  Data: Samples from the Rocknest aeolian deposit were heated to ~835°C under helium flow and evolved gases analyzed by Curiosity's Sample Analysis at Mars instrument suite. H2O, SO2, CO2, and O2 were the major gases released. Water abundance (1.5 to 3 weight percent) and release temperature suggest that H2O is bound within an amorphous component of the sample. Decomposition of fine-grained Fe or Mg carbonate is the likely source of much of the evolved CO2. Evolved O2 is coincident with the release of Cl, suggesting that oxygen is produced from thermal decomposition of an oxychloride compound. Elevated δD values are consistent with recent atmospheric exchange. Carbon isotopes indicate multiple carbon sources in the fines. Several simple organic compounds were detected, but they are not definitively martian in origin. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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