Mars Science Laboratory Observations of Chloride Salts in Gale Crater, Mars

Mars Science Laboratory Observations of Chloride Salts in Gale Crater, Mars

© 2019. The Authors.

Détails bibliographiques
Publié dans:Geophysical research letters. - 1984. - 46(2019), 19 vom: 16. Okt., Seite 10754-10763
Auteur principal: Thomas, N H (Auteur)
Autres auteurs: Ehlmann, B L, Meslin, P-Y, Rapin, W, Anderson, D E, Rivera-Hernández, F, Forni, O, Schröder, S, Cousin, A, Mangold, N, Gellert, R, Gasnault, O, Wiens, R C
Format: Article en ligne
Langue:English
Publié: 2019
Accès à la collection:Geophysical research letters
Sujets:Journal Article Mars Science Laboratory Curiosity rover chlorine groundwater halite salts
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520 |a The Mars Science Laboratory Curiosity rover is traversing a sequence of stratified sedimentary rocks in Gale crater that contain varied eolian, fluviodeltaic, and lake deposits, with phyllosilicates, iron oxides, and sulfate salts. Here, we report the chloride salt distribution along the rover traverse. Chlorine is detected at low levels (<3 wt.%) in soil and rock targets with multiple MSL instruments. Isolated fine-scale observations of high chlorine (up to ≥15 wt.% Cl), detected using the ChemCam instrument, are associated with elevated Na2O and interpreted as halite grains or cements in bedrock. Halite is also interpreted at the margins of veins and in nodular, altered textures. We have not detected halite in obvious evaporitic layers. Instead, its scattered distribution indicates that chlorides emplaced earlier in particular members of the Murray formation were remobilized and reprecipitated by later groundwaters within Murray formation mudstones and in diagenetic veins and nodules 
650 4 |a Journal Article 
650 4 |a Mars Science Laboratory Curiosity rover 
650 4 |a chlorine 
650 4 |a groundwater 
650 4 |a halite 
650 4 |a salts 
700 1 |a Ehlmann, B L  |e verfasserin  |4 aut 
700 1 |a Meslin, P-Y  |e verfasserin  |4 aut 
700 1 |a Rapin, W  |e verfasserin  |4 aut 
700 1 |a Anderson, D E  |e verfasserin  |4 aut 
700 1 |a Rivera-Hernández, F  |e verfasserin  |4 aut 
700 1 |a Forni, O  |e verfasserin  |4 aut 
700 1 |a Schröder, S  |e verfasserin  |4 aut 
700 1 |a Cousin, A  |e verfasserin  |4 aut 
700 1 |a Mangold, N  |e verfasserin  |4 aut 
700 1 |a Gellert, R  |e verfasserin  |4 aut 
700 1 |a Gasnault, O  |e verfasserin  |4 aut 
700 1 |a Wiens, R C  |e verfasserin  |4 aut 
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