Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Lithium isotopes as indicators of meteorite parent body alteration

    Access Status
    Open access via publisher
    Authors
    Sephton, M.
    James, R.
    Fehr, M.
    Bland, Phil
    Gounelle, M.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Sephton, Mark A. and James, Rachael H. and Fehr, Manuela A. and Bland, Philip A. and Gounelle, Matthieu. 2013. Lithium isotopes as indicators of meteorite parent body alteration. Meteoritics and Planetary Science. 48 (5): pp. 872-878.
    Source Title
    Meteoritics and Planetary Science
    DOI
    10.1111/maps.12094
    ISSN
    1086-9379
    URI
    http://hdl.handle.net/20.500.11937/46909
    Collection
    • Curtin Research Publications
    Abstract

    Hydrothermal processing on planetesimals in the early solar system produced new mineral phases, including those generated by the transformation of anhydrous silicates into their hydrated counterparts. Carbonaceous chondrites represent tangible remnants of such alteration products. Lithium isotopes are known to be responsive to aqueous alteration, yet previously recognized variability within whole rock samples from the same meteorite appears to complicate the use of these isotopes as indicators of processing by water. We demonstrate a new way to use lithium isotopes that reflects aqueous alteration in carbonaceous chondrites. Temperature appears to exert a control on the production of acetic acid-soluble phases, such as carbonates and poorly crystalline Fe-oxyhydroxides. Temperature and degree of water-rock interaction determines the amount of lithium isotope fractionation expressed as the difference between whole rock and acetic acid-leachable fractions. Using these features, the type 1 chondrite Orgueil (δ7Li(whole rock) = 4.3‰; Δ7Li(acetic-whole) = 1.2‰) can be distinguished from the type 2 chondrites Murchison (δ7Li(whole rock) = 3.8; Δ7Li(acetic-whole) = 8.8‰) and carbonate-poor Tagish Lake (δ7Li(whole rock) = 4.3; Δ7Li(acetic-whole) = 9.4‰). This initial study suggests that lithium isotopes have the potential to reveal the role of liquid water in the early solar system.

    Related items

    Showing items related by title, author, creator and subject.

    • Mineralogy, petrology, geochemistry, and chronology of the Murrili (H5) meteorite fall: The third recovered fall from the Desert Fireball Network
      Anderson, Seamus ; Benedix, Gretchen ; Forman, Lucy ; Daly, Luke ; Greenwood, R.C.; Franchi, I.A.; Friedrich, J.M.; Macke, R.; Wiggins, S.; Britt, D.; Cadogan, J.M.; Meier, M.M.M.; Maden, C.; Busemann, H.; Welten, K.C.; Caffee, M.W.; Jourdan, Fred ; Mayers, C.; Kennedy, T.; Godel, B.; Esteban, L.; Merigot, K.; Bevan, Alexander ; Bland, Phil ; Paxman, Jonathan ; Towner, Martin ; Cupak, Martin ; Sansom, Eleanor ; Howie, Robert ; Devillepoix, Hadrien ; Jansen-Sturgeon, T.; Stuart, D.; Strangway, D. (2021)
      Murrili, the third meteorite recovered by the Desert Fireball Network, is analyzed using mineralogy, oxygen isotopes, bulk chemistry, physical properties, noble gases, and cosmogenic radionuclides. The modal mineralogy, ...
    • Inter-mineral Mg isotope fractionation during hydrothermal ultramafic rock alteration: Implications for the global Mg-cycle
      Beinlich, Andreas; Mavromatis, V.; Austrheim, H.; Oelkers, E. (2014)
      Both riverine and ocean waters are enriched in 24Mg compared to the homogeneous chondritic Mg isotopic composition of the Earth's mantle requiring a fractionation step that is generally attributed to low temperature ...
    • Petrogenesis of the Cretaceous Zhangzhou batholith in southeastern China: Zircon U–Pb age and Sr–Nd–Hf–O isotopic evidence
      Chen, Jing-yuan; Yang, Jin-hui; Zhang, Ji-heng; Sun, Jin-feng; Wilde, Simon (2013)
      Whole-rock geochemical and Sr–Nd–Hf isotopic data and in situ zircon U–Pb and Hf–O isotopes have been determined for mafic (gabbro and diorite) and felsic (I- and A-type granites) rocks from the Zhangzhou batholith in ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.