A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter
Identifieur interne : 000755 ( Main/Curation ); précédent : 000754; suivant : 000756A 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.
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DOI: 10.1029/2009JE003342
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Milliken</name><affiliation wicri:level="1"><mods:affiliation>Jet Propulsion Laboratory, Caltech, California, Pasadena, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Jet Propulsion Laboratory, Caltech, California, Pasadena</wicri:regionArea></affiliation></author><author><name sortKey="Bishop, Janice L" sort="Bishop, Janice L" uniqKey="Bishop J" first="Janice L." last="Bishop">Janice L. Bishop</name><affiliation wicri:level="1"><mods:affiliation>SETI Institute, California, Mountain View, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>SETI Institute, California, Mountain View</wicri:regionArea></affiliation></author><author><name sortKey="Mckeown, Nancy K" sort="Mckeown, Nancy K" uniqKey="Mckeown N" first="Nancy K." last="Mckeown">Nancy K. Mckeown</name><affiliation wicri:level="1"><mods:affiliation>Department of Earth and Planetary Sciences, University of California, California, Santa Cruz, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Earth and Planetary Sciences, University of California, California, Santa Cruz</wicri:regionArea></affiliation></author><author><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><affiliation wicri:level="1"><mods:affiliation>Jet Propulsion Laboratory, Caltech, California, Pasadena, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Jet Propulsion Laboratory, Caltech, California, Pasadena</wicri:regionArea></affiliation></author><author><name sortKey="Seelos, Frank P" sort="Seelos, Frank P" uniqKey="Seelos F" first="Frank P." last="Seelos">Frank P. 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Wiseman</name><affiliation wicri:level="1"><mods:affiliation>Department of Earth and Planetary Sciences, Washington University, Missouri, St. Louis, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Earth and Planetary Sciences, Washington University, Missouri, St. Louis</wicri:regionArea></affiliation></author><author><name sortKey="Arvidson, Raymond E" sort="Arvidson, Raymond E" uniqKey="Arvidson R" first="Raymond E." last="Arvidson">Raymond E. Arvidson</name><affiliation wicri:level="1"><mods:affiliation>Department of Earth and Planetary Sciences, Washington University, Missouri, St. Louis, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Earth and Planetary Sciences, Washington University, Missouri, St. Louis</wicri:regionArea></affiliation></author><author><name sortKey="Wray, James J" sort="Wray, James J" uniqKey="Wray J" first="James J." last="Wray">James J. Wray</name><affiliation wicri:level="1"><mods:affiliation>Department of Astronomy, Cornell University, New York, Ithaca, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Astronomy, Cornell University, New York, Ithaca</wicri:regionArea></affiliation></author><author><name sortKey="Swayze, Gregg" sort="Swayze, Gregg" uniqKey="Swayze G" first="Gregg" last="Swayze">Gregg Swayze</name><affiliation wicri:level="1"><mods:affiliation>U.S. Geological Survey, Colorado, Denver, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>U.S. Geological Survey, Colorado, Denver</wicri:regionArea></affiliation></author><author><name sortKey="Clark, Roger N" sort="Clark, Roger N" uniqKey="Clark R" first="Roger N." last="Clark">Roger N. Clark</name><affiliation wicri:level="1"><mods:affiliation>U.S. Geological Survey, Colorado, Denver, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>U.S. Geological Survey, Colorado, Denver</wicri:regionArea></affiliation></author><author><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><affiliation wicri:level="1"><mods:affiliation>NASA Ames Research Center, California, Moffett Field, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>NASA Ames Research Center, California, Moffett Field</wicri:regionArea></affiliation></author><author><name sortKey="Mcewen, Alfred S" sort="Mcewen, Alfred S" uniqKey="Mcewen A" first="Alfred S." last="Mcewen">Alfred S. Mcewen</name><affiliation wicri:level="1"><mods:affiliation>Institut d'Astrophysique Spatiale, Université Paris Sud, Orsay, France</mods:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Institut d'Astrophysique Spatiale, Université Paris Sud, Orsay</wicri:regionArea></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"><mods:affiliation>Lunar and Planetary Laboratory, University of Arizona, Arizona, Tucson, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Lunar and Planetary Laboratory, University of Arizona, Arizona, Tucson</wicri:regionArea></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></record>Pour manipuler ce document sous Unix (Dilib)
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