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Evidence for indigenous nitrogen in sedimentary and aeolian deposits from the Curiosity rover investigations at Gale crater, Mars.
Stern, Jennifer C; Sutter, Brad; Freissinet, Caroline; Navarro-González, Rafael; McKay, Christopher P; Archer, P Douglas; Buch, Arnaud; Brunner, Anna E; Coll, Patrice; Eigenbrode, Jennifer L; Fairen, Alberto G; Franz, Heather B; Glavin, Daniel P; Kashyap, Srishti; McAdam, Amy C; Ming, Douglas W; Steele, Andrew; Szopa, Cyril; Wray, James J; Martín-Torres, F Javier; Zorzano, Maria-Paz; Conrad, Pamela G; Mahaffy, Paul R.
Afiliación
  • Stern JC; Solar System Exploration Division, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771; jennifer.c.stern@nasa.gov.
  • Sutter B; Jacobs Technology, Inc., Johnson Space Center, National Aeronautics and Space Administration, Houston, TX 77058;
  • Freissinet C; NASA Postdoctoral Program, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771;
  • Navarro-González R; Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, 04510 Mexico D.F., Mexico;
  • McKay CP; Exobiology Branch, Ames Research Center, National Aeronautics and Space Administration, Moffett Field, CA 94035;
  • Archer PD; Jacobs Technology, Inc., Johnson Space Center, National Aeronautics and Space Administration, Houston, TX 77058;
  • Buch A; Laboratoire de Genie de Procedes et Materiaux, Ecole Centrale Paris, 92295 Chatenay-Malabry, France;
  • Brunner AE; Solar System Exploration Division, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771; School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85281;
  • Coll P; Laboratoire Interuniversitaire des Systèmes Atmosphériques, Université Paris-Est Créteil, Université Paris Diderot and CNRS, 94000 Créteil, France;
  • Eigenbrode JL; Solar System Exploration Division, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771;
  • Fairen AG; Centro de Astrobiologia, 28850 Torrejón de Ardoz, Madrid, Spain; Department of Astronomy, Cornell University, Ithaca, NY 14853;
  • Franz HB; Solar System Exploration Division, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771; Center for Research and Exploration in Space Science and Technology, University of Maryland, College Park, MD 20742;
  • Glavin DP; Solar System Exploration Division, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771;
  • Kashyap S; Solar System Exploration Division, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771; Department of Microbiology University of Massachusetts, Amherst, MA 01003;
  • McAdam AC; Solar System Exploration Division, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771;
  • Ming DW; Astromaterials Research and Exploration Science Directorate, Johnson Space Center, National Aeronautics and Space Administration, Houston, TX 77058;
  • Steele A; Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015;
  • Szopa C; Laboratoire Atmosphères, Milieux et Observations Spatiales, Université Pierre et Marie Curie, Université Versailles Saint-Quentin and CNRS, 75005 Paris, France;
  • Wray JJ; School of Earth and Atmospheric Sciences Georgia Institute of Technology, Atlanta, GA 30332;
  • Martín-Torres FJ; Instituto Andaluz de Ciencias de la Tierra (Consejo Superior de Investigaciones Cientificas-Universidad de Granada), 18100 Armilla, Granada, Spain; Division of Space Technology, Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, S-981 28 Kiruna, Sweden;
  • Zorzano MP; Centro de Astrobiologia, 28850 Torrejón de Ardoz, Madrid, Spain;
  • Conrad PG; Solar System Exploration Division, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771;
  • Mahaffy PR; Solar System Exploration Division, Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD 20771;
Proc Natl Acad Sci U S A ; 112(14): 4245-50, 2015 Apr 07.
Article en En | MEDLINE | ID: mdl-25831544
ABSTRACT
The Sample Analysis at Mars (SAM) investigation on the Mars Science Laboratory (MSL) Curiosity rover has detected oxidized nitrogen-bearing compounds during pyrolysis of scooped aeolian sediments and drilled sedimentary deposits within Gale crater. Total N concentrations ranged from 20 to 250 nmol N per sample. After subtraction of known N sources in SAM, our results support the equivalent of 110-300 ppm of nitrate in the Rocknest (RN) aeolian samples, and 70-260 and 330-1,100 ppm nitrate in John Klein (JK) and Cumberland (CB) mudstone deposits, respectively. Discovery of indigenous martian nitrogen in Mars surface materials has important implications for habitability and, specifically, for the potential evolution of a nitrogen cycle at some point in martian history. The detection of nitrate in both wind-drifted fines (RN) and in mudstone (JK, CB) is likely a result of N2 fixation to nitrate generated by thermal shock from impact or volcanic plume lightning on ancient Mars. Fixed nitrogen could have facilitated the development of a primitive nitrogen cycle on the surface of ancient Mars, potentially providing a biochemically accessible source of nitrogen.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Marte / Sedimentos Geológicos / Medio Ambiente Extraterrestre / Nitrógeno Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2015 Tipo del documento: Article
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Marte / Sedimentos Geológicos / Medio Ambiente Extraterrestre / Nitrógeno Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2015 Tipo del documento: Article