A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter
Identifieur interne : 000143 ( Main/Exploration ); précédent : 000142; suivant : 000144A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter
Auteurs : Scott L. Murchie [États-Unis] ; John F. Mustard [États-Unis] ; Bethany L. Ehlmann [États-Unis] ; Ralph E. Milliken [États-Unis] ; Janice L. Bishop [États-Unis] ; Nancy K. Mckeown [États-Unis] ; Eldar Z. Noe Dobrea [États-Unis] ; Frank P. Seelos [États-Unis] ; Debra L. Buczkowski [États-Unis] ; Sandra M. Wiseman [États-Unis] ; Raymond E. Arvidson [États-Unis] ; James J. Wray [États-Unis] ; Gregg Swayze [États-Unis] ; Roger N. Clark [États-Unis] ; David J. Des Marais [États-Unis] ; Alfred S. Mcewen [France] ; Jean-Pierre Bibring [États-Unis]Source :
- Journal of Geophysical Research: Planets [ 0148-0227 ] ; 2009-02.
Abstract
Martian aqueous mineral deposits have been examined and characterized using data acquired during Mars Reconnaissance Orbiter's (MRO) primary science phase, including Compact Reconnaissance Imaging Spectrometer for Mars hyperspectral images covering the 0.4–3.9 μm wavelength range, coordinated with higher–spatial resolution HiRISE and Context Imager images. MRO's new high‐resolution measurements, combined with earlier data from Thermal Emission Spectrometer; Thermal Emission Imaging System; and Observatoire pour la Minéralogie, L'Eau, les Glaces et l'Activitié on Mars Express, indicate that aqueous minerals are both diverse and widespread on the Martian surface. The aqueous minerals occur in 9–10 classes of deposits characterized by distinct mineral assemblages, morphologies, and geologic settings. Phyllosilicates occur in several settings: in compositionally layered blankets hundreds of meters thick, superposed on eroded Noachian terrains; in lower layers of intracrater depositional fans; in layers with potential chlorides in sediments on intercrater plains; and as thousands of deep exposures in craters and escarpments. Carbonate‐bearing rocks form a thin unit surrounding the Isidis basin. Hydrated silica occurs with hydrated sulfates in thin stratified deposits surrounding Valles Marineris. Hydrated sulfates also occur together with crystalline ferric minerals in thick, layered deposits in Terra Meridiani and in Valles Marineris and together with kaolinite in deposits that partially infill some highland craters. In this paper we describe each of the classes of deposits, review hypotheses for their origins, identify new questions posed by existing measurements, and consider their implications for ancient habitable environments. On the basis of current data, two to five classes of Noachian‐aged deposits containing phyllosilicates and carbonates may have formed in aqueous environments with pH and water activities suitable for life.
Url:
DOI: 10.1029/2009JE003342
Affiliations:
- France, États-Unis
- Rhode Island, État de New York
- Ithaca (New York), Orsay, Providence (Rhode Island)
- Université Brown, Université Cornell, Université Paris-Sud
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Mcewen</name><affiliation wicri:level="4"><country xml:lang="fr">France</country><wicri:regionArea>Institut d'Astrophysique Spatiale, Université Paris Sud, Orsay</wicri:regionArea><placeName><settlement type="city">Orsay</settlement></placeName><orgName type="university">Université Paris-Sud</orgName></affiliation></author><author><name sortKey="Bibring, Jean Ierre" sort="Bibring, Jean Ierre" uniqKey="Bibring J" first="Jean-Pierre" last="Bibring">Jean-Pierre Bibring</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Lunar and Planetary Laboratory, University of Arizona, Arizona, Tucson</wicri:regionArea><wicri:noRegion>Tucson</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Geophysical Research: Planets</title><title level="j" type="abbrev">J. Geophys. Res.</title><idno type="ISSN">0148-0227</idno><idno type="eISSN">2156-2202</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2009-02">2009-02</date><biblScope unit="volume">114</biblScope><biblScope unit="issue">E2</biblScope><biblScope unit="page" from="/">n/a</biblScope><biblScope unit="page" to="/">n/a</biblScope></imprint><idno type="ISSN">0148-0227</idno></series><idno type="istex">25C1508E57DE1D470F21528D2541DD2E2B8C3B35</idno><idno type="DOI">10.1029/2009JE003342</idno><idno type="ArticleID">2009JE003342</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0148-0227</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Martian aqueous mineral deposits have been examined and characterized using data acquired during Mars Reconnaissance Orbiter's (MRO) primary science phase, including Compact Reconnaissance Imaging Spectrometer for Mars hyperspectral images covering the 0.4–3.9 μm wavelength range, coordinated with higher–spatial resolution HiRISE and Context Imager images. MRO's new high‐resolution measurements, combined with earlier data from Thermal Emission Spectrometer; Thermal Emission Imaging System; and Observatoire pour la Minéralogie, L'Eau, les Glaces et l'Activitié on Mars Express, indicate that aqueous minerals are both diverse and widespread on the Martian surface. The aqueous minerals occur in 9–10 classes of deposits characterized by distinct mineral assemblages, morphologies, and geologic settings. Phyllosilicates occur in several settings: in compositionally layered blankets hundreds of meters thick, superposed on eroded Noachian terrains; in lower layers of intracrater depositional fans; in layers with potential chlorides in sediments on intercrater plains; and as thousands of deep exposures in craters and escarpments. Carbonate‐bearing rocks form a thin unit surrounding the Isidis basin. Hydrated silica occurs with hydrated sulfates in thin stratified deposits surrounding Valles Marineris. Hydrated sulfates also occur together with crystalline ferric minerals in thick, layered deposits in Terra Meridiani and in Valles Marineris and together with kaolinite in deposits that partially infill some highland craters. In this paper we describe each of the classes of deposits, review hypotheses for their origins, identify new questions posed by existing measurements, and consider their implications for ancient habitable environments. On the basis of current data, two to five classes of Noachian‐aged deposits containing phyllosilicates and carbonates may have formed in aqueous environments with pH and water activities suitable for life.</div></front></TEI><affiliations><list><country><li>France</li><li>États-Unis</li></country><region><li>Rhode Island</li><li>État de New York</li></region><settlement><li>Ithaca (New York)</li><li>Orsay</li><li>Providence (Rhode Island)</li></settlement><orgName><li>Université Brown</li><li>Université Cornell</li><li>Université Paris-Sud</li></orgName></list><tree><country name="États-Unis"><noRegion><name sortKey="Murchie, Scott L" sort="Murchie, Scott L" uniqKey="Murchie S" first="Scott L." last="Murchie">Scott L. Murchie</name></noRegion><name sortKey="Arvidson, Raymond E" sort="Arvidson, Raymond E" uniqKey="Arvidson R" first="Raymond E." last="Arvidson">Raymond E. Arvidson</name><name sortKey="Bibring, Jean Ierre" sort="Bibring, Jean Ierre" uniqKey="Bibring J" first="Jean-Pierre" last="Bibring">Jean-Pierre Bibring</name><name sortKey="Bishop, Janice L" sort="Bishop, Janice L" uniqKey="Bishop J" first="Janice L." last="Bishop">Janice L. Bishop</name><name sortKey="Buczkowski, Debra L" sort="Buczkowski, Debra L" uniqKey="Buczkowski D" first="Debra L." last="Buczkowski">Debra L. Buczkowski</name><name sortKey="Clark, Roger N" sort="Clark, Roger N" uniqKey="Clark R" first="Roger N." last="Clark">Roger N. Clark</name><name sortKey="Des Marais, David J" sort="Des Marais, David J" uniqKey="Des Marais D" first="David J." last="Des Marais">David J. Des Marais</name><name sortKey="Ehlmann, Bethany L" sort="Ehlmann, Bethany L" uniqKey="Ehlmann B" first="Bethany L." last="Ehlmann">Bethany L. Ehlmann</name><name sortKey="Mckeown, Nancy K" sort="Mckeown, Nancy K" uniqKey="Mckeown N" first="Nancy K." last="Mckeown">Nancy K. Mckeown</name><name sortKey="Milliken, Ralph E" sort="Milliken, Ralph E" uniqKey="Milliken R" first="Ralph E." last="Milliken">Ralph E. Milliken</name><name sortKey="Murchie, Scott L" sort="Murchie, Scott L" uniqKey="Murchie S" first="Scott L." last="Murchie">Scott L. Murchie</name><name sortKey="Mustard, John F" sort="Mustard, John F" uniqKey="Mustard J" first="John F." last="Mustard">John F. Mustard</name><name sortKey="Noe Dobrea, Eldar Z" sort="Noe Dobrea, Eldar Z" uniqKey="Noe Dobrea E" first="Eldar Z." last="Noe Dobrea">Eldar Z. Noe Dobrea</name><name sortKey="Seelos, Frank P" sort="Seelos, Frank P" uniqKey="Seelos F" first="Frank P." last="Seelos">Frank P. Seelos</name><name sortKey="Swayze, Gregg" sort="Swayze, Gregg" uniqKey="Swayze G" first="Gregg" last="Swayze">Gregg Swayze</name><name sortKey="Wiseman, Sandra M" sort="Wiseman, Sandra M" uniqKey="Wiseman S" first="Sandra M." last="Wiseman">Sandra M. Wiseman</name><name sortKey="Wray, James J" sort="Wray, James J" uniqKey="Wray J" first="James J." last="Wray">James J. Wray</name></country><country name="France"><noRegion><name sortKey="Mcewen, Alfred S" sort="Mcewen, Alfred S" uniqKey="Mcewen A" first="Alfred S." last="Mcewen">Alfred S. Mcewen</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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