Meslin, P.-Y. and Ganault, O. and Forni, O. and Schröder, S. and Cousin, A. and Berger, G. and Clegg, S. M. and Lasue, J. and Maurice, S. and Sautter, V. and Le Mouélic, S. and Wiens, R. C. and Fabre, C. and Goetz, W. and Bish, D. and Mangold, N. and Ehlmann, B. and Lanza, N. and Harri, A.-M. and Anderson, R. and Rampe, E. and McConnochie, T. H. and Pinet, P. and Blaney, D. and Léveillé, R. and Archer, D. and Barraclough, B. and Bender, S. and Blake, D. and Blank, J. G. and Bridges, N. and Clark, B. C. and DeFlores, L. and Delapp, D. and Dromart, G. and Dyar, M. D. and Fisk, M. and Gondet, B. and Grotzinger, J. and Herkenhoff, K. and Johnson, J. and Lacour, J.-L. and Langevin, Y. and Leshin, L. and Lewin, E. and Madsen, M. B. and Melikechi, N. and Mezzacappa, A. and Mischna, M. A. and Moores, J. E. and Newsom, H. and Ollila, A. and Perez, R. and Renno, N. and Sirven, J.-B. and Tokar, R. and de la Torre, M. and d'Uston, L. and Vaniman, D. and Yingst, A. (2013) Soil Diversity and Hydration as Observed by ChemCam at Gale Crater, Mars. Science, 341 (6153). Art. No. 1238670. ISSN 0036-8075. http://resolver.caltech.edu/CaltechAUTHORS:20130930-104342097
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The ChemCam instrument, which provides insight into martian soil chemistry at the submillimeter scale, identified two principal soil types along the Curiosity rover traverse: a fine-grained mafic type and a locally derived, coarse-grained felsic type. The mafic soil component is representative of widespread martian soils and is similar in composition to the martian dust. It possesses a ubiquitous hydrogen signature in ChemCam spectra, corresponding to the hydration of the amorphous phases found in the soil by the CheMin instrument. This hydration likely accounts for an important fraction of the global hydration of the surface seen by previous orbital measurements. ChemCam analyses did not reveal any significant exchange of water vapor between the regolith and the atmosphere. These observations provide constraints on the nature of the amorphous phases and their hydration.
|Additional Information:||© 2013 American Association for the Advancement of Science. Received 3 April 2013; accepted 15 August 2013. This research was carried out with funding from the Centre National d’Etudes Spatiales (CNES). Work in the United States was carried out under contract from NASA’s Mars Program Office. W.G. acknowledges partial funding from Deutsche Forschungsgemeinschaft grant GO 2288/1-1. This team gratefully acknowledges JPL for developing and leading this successful mission. The data reported in this paper are archived at the Planetary Data System, accessible at http://pds-geosciences.wustl. edu/missions/msl/index.htm.|
|Non-Subject Keywords:||Mars Science Laboratory ; Curiosity ; NASA|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||30 Sep 2013 18:54|
|Last Modified:||22 Nov 2013 20:19|
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