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Elemental Geochemis...
Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars
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- McLennan, S.M. (författare)
- Department of Geosciences, State University of New York, Stony Brook
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- Anderson, R.B. (författare)
- U.S. Geological Survey, Astrogeology Science Center, Flagstaff
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- III, J.F. Bell (författare)
- School of Earth and Space Exploration, Arizona State University
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- Bridges, J.C. (författare)
- Space Research Centre, Department of Physics and Astronomy, University of Leicester
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- III, F. Calef (författare)
- Jet Propulsion Laboratory
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- J.L., Campbell (författare)
- Department of Physics, University of Guelph, Ontario
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- Clark, B.C. (författare)
- Space Science Institute
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- Clegg, S. (författare)
- Chemistry Division, Los Alamos National Laboratory
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- Conrad, P. (författare)
- NASA Goddard Space Flight Center
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- Cousin, A. (författare)
- Chemistry Division, Los Alamos National Laboratory
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- Marais, D.J. Des (författare)
- Department of Space Sciences, NASA Ames Research Center, Moffett Field
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- Dromart, G. (författare)
- Laboratoire de Geologié de Lyon, Université de Lyon
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- Dyar, M.D. (författare)
- Department of Astronomy, Mt. Holyoke College, South Hadley
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- Edgar, L.A. (författare)
- School of Earth and Space Exploration, Arizona State University
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- Ehlmann, B.L. (författare)
- Division of Geological and Planetary Sciences, California Institute of Technology, Jet Propulsion Laboratory, California Institute of Technology, Pasadena
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- Fabre, C. (författare)
- UMR 7359 CNRS-Georesources, Campus des Aiguillettes, Faculté des Sciences, Vandoeuvre Les Nancy
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- Forni, O. (författare)
- IRAP/CNRS
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- Gasnault, O. (författare)
- IRAP/CNRS
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- Gellert, R. (författare)
- Department of Physics, University of Guelph, Ontario
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- Gordon, S. (författare)
- Institute of Meteoritics, University of New Mexico, Albuquerque
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- Grant, J.A. (författare)
- Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Washington
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- Grotzinger, J.P. (författare)
- Division of Geological and Planetary Sciences, California Institute of Technology
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- Gupta, S. (författare)
- Department of Earth Science and Engineering, Imperial College London
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- Herkenhoff, K.E. (författare)
- U.S. Geological Survey, Flagstaff
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- Hurowitz, J.A. (författare)
- Department of Geosciences, State University of New York, Stony Brook
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- Yingst, R.A. (författare)
- Planetary Science Institute, Tucson
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- Martin-Torres, Javier (bidragsgivare)
- Centro de Astrobiología (CAB),MSL Science Team
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Department of Geosciences, State University of New York, Stony Brook US. Geological Survey, Astrogeology Science Center, Flagstaff (creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2014
- 2014
- Engelska.
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Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 343:6169
- Relaterad länk:
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https://authors.libr...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved, indicating arid, possibly cold, paleoclimates and rapid erosion and deposition. The absence of predicted geochemical variations indicates that magnetite and phyllosilicates formed by diagenesis under low-temperature, circumneutral pH, rock-dominated aqueous conditions. Analyses of diagenetic features (including concretions, raised ridges, and fractures) at high spatial resolution indicate that they are composed of iron- and halogen-rich components, magnesium-iron-chlorine–rich components, and hydrated calcium sulfates, respectively. Composition of a cross-cutting dike-like feature is consistent with sedimentary intrusion. The geochemistry of these sedimentary rocks provides further evidence for diverse depositional and diagenetic sedimentary environments during the early history of Mars.
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McLennan, S.M.
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Anderson, R.B.
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III, J.F. Bell
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Bridges, J.C.
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III, F. Calef
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J.L., Campbell
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Clark, B.C.
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Clegg, S.
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Conrad, P.
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Cousin, A.
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Marais, D.J. Des
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Dromart, G.
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Dyar, M.D.
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Edgar, L.A.
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Ehlmann, B.L.
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Fabre, C.
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Forni, O.
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Gasnault, O.
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Gellert, R.
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Gordon, S.
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Grant, J.A.
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Grotzinger, J.P.
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Gupta, S.
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Herkenhoff, K.E.
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Hurowitz, J.A.
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Yingst, R.A.
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Martin-Torres, J ...
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