Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars

Autor: Paul R. Mahaffy, Pascaline Francois, Pamela G. Conrad, Michel Cabane, Daniel P. Glavin, D. J. Des Marais, María Paz Zorzano, John P. Grotzinger, C. A. Malespin, Arnaud Buch, Rafael Navarro-González, Douglas W. Ming, Roger E. Summons, Caroline Freissinet, A. E. Brunner, Steven W. Squyres, Dawn Y. Sumner, M. G. Martin, P. D. Archer, Andrew Steele, Alberto G. Fairén, Cyril Szopa, Sushil K. Atreya, S. Kashyap, Brad Sutter, I. L. ten Kate, Jennifer L. Eigenbrode, Patrice Coll, Laurie A. Leshin, H. B. Franz, William B. Brinckerhoff, Kristen E. Miller, Jennifer C. Stern, F. J. Martin-Torres, Amy McAdam, B. D. Prats, Jason P. Dworkin, Alexander A. Pavlov
Přispěvatelé: Petrology, Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences, Miller, Kristen, Summons, Roger E, NASA Goddard Space Flight Center (GSFC), Department of Earth, Atmospheric and Planetary Sciences [MIT, Cambridge] (EAPS), Massachusetts Institute of Technology (MIT), Center for Research and Exploration in Space Science and Technology [GSFC] (CRESST), Laboratoire de Génie des Procédés et Matériaux - EA 4038 (LGPM), CentraleSupélec, PLANETO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), NASA Johnson Space Center (JSC), NASA, Department of Atmospheric, Oceanic, and Space Sciences [Ann Arbor] (AOSS), University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), NASA Ames Research Center (ARC), Centro de Astrobiologia [Madrid] (CAB), Instituto Nacional de Técnica Aeroespacial (INTA)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Department of Astronomy [Ithaca], Cornell University [New York], Division of Geological and Planetary Sciences [Pasadena], California Institute of Technology (CALTECH), Department of Earth Sciences [Utrecht], Utrecht University [Utrecht], Rensselaer Polytechnic Institute (RPI), Goddard Earth Sciences and Technology and Research (GESTAR), NASA-Universities Space Research Association (USRA), Department of Chemistry [CUA], Catholic University of America, Department of Computer Science, Electrical and Space Engineering [Luleå], Luleå University of Technology (LUT), Instituto Andaluz de Ciencias de la Tierra (IACT), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universidad de Granada = University of Granada (UGR), Astromaterials Research and Exploration Science (ARES), NASA-NASA, Instituto de Ciencias Nucleares [Mexico], Universidad Nacional Autónoma de México = National Autonomous University of Mexico (UNAM), Geophysical Laboratory [Carnegie Institution], Carnegie Institution for Science, Department of Earth and Planetary Science [UC Berkeley] (EPS), University of California [Berkeley] (UC Berkeley), University of California (UC)-University of California (UC), NASAFrench Space Agency (CNES), IMPEC - LATMOS, Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Consejo Superior de Investigaciones Científicas [Spain] (CSIC)-Instituto Nacional de Técnica Aeroespacial (INTA), Cornell University, Universities Space Research Association (USRA)-NASA, Consejo Superior de Investigaciones Científicas [Spain] (CSIC)-Universidad de Granada (UGR), Universidad Nacional Autónoma de México (UNAM), Carnegie Institution for Science [Washington], University of California [Berkeley], University of California-University of California, Universidad de Granada (UGR)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universidad de Granada (UGR)
Rok vydání: 2015
Předmět:
organic molecules
010504 meteorology & atmospheric sciences
oxychlorine
Curiosity rover
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
Mars
Erosion and weathering
01 natural sciences
Astrobiology
chemistry.chemical_compound
Interplanetary dust cloud
Volcanism
Geochemistry and Petrology
0103 physical sciences
Earth and Planetary Sciences (miscellaneous)
MSL
010303 astronomy & astrophysics
Research Articles
0105 earth and related environmental sciences
Martian
Surface materials and properties
[SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]
Mars Science Laboratory
Geology
Mars Exploration Program
Regolith
Gale Crater
Diagenesis
Geophysics
SAM
Geochemistry
Meteorite
chemistry
13. Climate action
Chlorobenzene
Space and Planetary Science
Oxychlorine
Sample Analysis at Mars
chlorobenzene
Organic molecules
Astronomical and Space Sciences
Composition
Zdroj: Journal of geophysical research. Planets, vol 120, iss 3
Journal of Geophysical Research: Planets, 120(3), 495
American Geophysical Union
Journal of Geophysical Research. Planets
Journal of Geophysical Research. Planets, 2015, 120 (3), pp.495-514. ⟨10.1002/2014JE004737⟩
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2015, 120 (3), pp.495-514. ⟨10.1002/2014JE004737⟩
Freissinet, C; Glavin, DP; Mahaffy, PR; Miller, KE; Eigenbrode, JL; Summons, RE; et al.(2015). Organic molecules in the Sheepbed Mudstone, Gale Crater, Mars. Journal of Geophysical Research E: Planets, 120(3), 495-514. doi: 10.1002/2014JE004737. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/2c02w2r0
ISSN: 2169-9097
2169-9100
Popis: The Sample Analysis at Mars (SAM) instrument on board the Mars Science Laboratory Curiosity rover is designed to conduct inorganic and organic chemical analyses of the atmosphere and the surface regolith and rocks to help evaluate the past and present habitability potential of Mars at Gale Crater. Central to this task is the development of an inventory of any organic molecules present to elucidate processes associated with their origin, diagenesis, concentration, and long-term preservation. This will guide the future search for biosignatures. Here we report the definitive identification of chlorobenzene (150–300 parts per billion by weight (ppbw)) and C2 to C4 dichloroalkanes (up to 70 ppbw) with the SAM gas chromatograph mass spectrometer (GCMS) and detection of chlorobenzene in the direct evolved gas analysis (EGA) mode, in multiple portions of the fines from the Cumberland drill hole in the Sheepbed mudstone at Yellowknife Bay. When combined with GCMS and EGA data from multiple scooped and drilled samples, blank runs, and supporting laboratory analog studies, the elevated levels of chlorobenzene and the dichloroalkanes cannot be solely explained by instrument background sources known to be present in SAM. We conclude that these chlorinated hydrocarbons are the reaction products of Martian chlorine and organic carbon derived from Martian sources (e.g., igneous, hydrothermal, atmospheric, or biological) or exogenous sources such as meteorites, comets, or interplanetary dust particles. Key Points First in situ evidence of nonterrestrial organics in Martian surface sediments Chlorinated hydrocarbons identified in the Sheepbed mudstone by SAM Organics preserved in sample exposed to ionizing radiation and oxidative condition
Databáze: OpenAIRE
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