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Organic matter preserved in 3-billion-year-old mudstones at Gale crater, Mars.
Eigenbrode, Jennifer L; Summons, Roger E; Steele, Andrew; Freissinet, Caroline; Millan, Maëva; Navarro-González, Rafael; Sutter, Brad; McAdam, Amy C; Franz, Heather B; Glavin, Daniel P; Archer, Paul D; Mahaffy, Paul R; Conrad, Pamela G; Hurowitz, Joel A; Grotzinger, John P; Gupta, Sanjeev; Ming, Doug W; Sumner, Dawn Y; Szopa, Cyril; Malespin, Charles; Buch, Arnaud; Coll, Patrice.
Afiliación
  • Eigenbrode JL; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA. jennifer.l.eigenbrode@nasa.gov.
  • Summons RE; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  • Steele A; Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
  • Freissinet C; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
  • Millan M; Laboratoire Atmosphères, Milieux, Observations Spatiales, Université Pierre et Marie Curie, Université Versailles Saint-Quentin and CNRS, Paris, France.
  • Navarro-González R; Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cuidad de México 04510, México.
  • Sutter B; Jacobs Technology, Houston, TX 77058, USA.
  • McAdam AC; Astromaterials Research and Exploration Science Division, NASA Johnson Space Center, Houston, TX 77058, USA.
  • Franz HB; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
  • Glavin DP; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
  • Archer PD; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
  • Mahaffy PR; Jacobs Technology, Houston, TX 77058, USA.
  • Conrad PG; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
  • Hurowitz JA; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
  • Grotzinger JP; Department of Geosciences, Stony Brook University, Stony Brook, NY 11794, USA.
  • Gupta S; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
  • Ming DW; Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, UK.
  • Sumner DY; Astromaterials Research and Exploration Science Division, NASA Johnson Space Center, Houston, TX 77058, USA.
  • Szopa C; Department of Earth and Planetary Sciences, University of California, Davis, CA 95616, USA.
  • Malespin C; Laboratoire Atmosphères, Milieux, Observations Spatiales, Université Pierre et Marie Curie, Université Versailles Saint-Quentin and CNRS, Paris, France.
  • Buch A; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
  • Coll P; Laboratoire Génie des Procédés et Matériaux, Centrale Supélec, Gif-sur-Yvette, France.
Science ; 360(6393): 1096-1101, 2018 06 08.
Article en En | MEDLINE | ID: mdl-29880683
ABSTRACT
Establishing the presence and state of organic matter, including its possible biosignatures, in martian materials has been an elusive quest, despite limited reports of the existence of organic matter on Mars. We report the in situ detection of organic matter preserved in lacustrine mudstones at the base of the ~3.5-billion-year-old Murray formation at Pahrump Hills, Gale crater, by the Sample Analysis at Mars instrument suite onboard the Curiosity rover. Diverse pyrolysis products, including thiophenic, aromatic, and aliphatic compounds released at high temperatures (500° to 820°C), were directly detected by evolved gas analysis. Thiophenes were also observed by gas chromatography-mass spectrometry. Their presence suggests that sulfurization aided organic matter preservation. At least 50 nanomoles of organic carbon persists, probably as macromolecules containing 5% carbon as organic sulfur molecules.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Science Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos