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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/46308

    Título
    ExoMars Raman Laser Spectrometer: A Tool to Semiquantify the Serpentinization Degree of Olivine-Rich Rocks on Mars
    Autor
    Veneranda ., MarcoAutoridad UVA Orcid
    López Reyes, Guillermo EduardoAutoridad UVA Orcid
    Pascual Sanchez, Elena
    Krzesińska, Agata M.
    Manrique Martínez, José AntonioAutoridad UVA Orcid
    Sanz Arranz, José AurelioAutoridad UVA Orcid
    Lantz, Cateline
    Lalla, Emmanuel Alexis
    Moral Inza, Andoni Gaizka
    Medina García, JesúsAutoridad UVA
    Poulet, Francois
    Dypvik, Henning
    Werner, Stephanie C.
    Vago, Jorge L.
    Rull Pérez, FernandoAutoridad UVA
    Año del Documento
    2021
    Editorial
    Mary Ann Liebert, Inc.
    Documento Fuente
    Astrobiology, Marzo 2021, vol. 21, n, 3. p. 307-322.
    Zusammenfassung
    We evaluated the effectiveness of the ExoMars Raman laser spectrometer (RLS) to determine the degree of serpentinization of olivine-rich units on Mars. We selected terrestrial analogs of martian ultramafic rocks from the Leka Ophiolite Complex (LOC) and analyzed them with both laboratory and flight-like analytical instruments. We first studied the mineralogical composition of the samples (mostly olivine and serpentine) with state-of-the-art diffractometric (X-ray diffractometry [XRD]) and spectroscopic (Raman, near-infrared spectroscopy [NIR]) laboratory systems. We compared these results with those obtained using our RLS ExoMars Simulator. Our work shows that the RLS ExoMars Simulator successfully identified all major phases. Moreover, when emulating the automatic operating mode of the flight instrument, the RLS ExoMars Simulator also detected several minor compounds (pyroxene and brucite), some of which were not observed by NIR and XRD (e.g., calcite). Thereafter, we produced RLS-dedicated calibration curves (R2 between 0.9993 and 0.9995 with an uncertainty between ±3.0% and ±5.2% with a confidence interval of 95%) to estimate the relative content of olivine and serpentine in the samples. Our results show that RLS can be very effective in identifying serpentine, a scientific target of primary importance for the potential detection of biosignatures on Mars—the main objective of the ExoMars rover mission.
    ISSN
    1531-1074
    Revisión por pares
    SI
    DOI
    10.1089/ast.2020.2265
    Patrocinador
    Proyecto MINECO Retos de la Sociedad. Ref. ESP2017-87690-C3-1-R
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/46308
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
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    • DEP32 - Artículos de revista [284]
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    Nombre:
    2101.08554.pdf
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    1.377Mb
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