Record details

    Lithium in tektites and impact glasses: Implications for sources, histories and large impacts
    Adolph, Leonie
    Deutsch, Alexander
    Magna, Tomáš
    Mezger, Klaus
    Mizera, Jiří
    Řanda, Zdeněk
    Seitz, Hans-Michael
    Skála, Roman
Publication type
    článek v periodiku
Source title - serial
    Geochimica et Cosmochimica Acta
    Roč. 75, č. 8
Thesaurus term
    lithium isotopes,tektites,impact glasses,lithophile elements,high-temperature isotope fractionation,Ries crater,precursor, meteorites
Abstract (in english)
   Lithium (Li) abundances and isotope compositions were determined in a representative suite of tektites, impact-related glasses, a glass fragment embedded in the suevite from the Ries impact crater and sedimentary materials in order to test a possible susceptibility of Li to fractionation during hypervelocity impact events and to deconvolve links to their potential parental sources. The overall data show a large spread in Li abundance (4.7-58 ppm Li) and d7Li values (-3.2 to 26.0?) but individual groups have distinctive Li compositions. Extreme shock pressures and the related extreme post-shock temperatures alone appear not to have any effect on the Li isotope systematics; therefore, useful information on parental lithologies and magmatic processes may be retrieved from analyses of Martian and lunar meteorites. Moreover, lack of significant Li depletion in tektites provides further constraints on the loss of volatile and moderately volatile elements during the Moon-forming impact.
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
Import date
    15. 10. 2014