Browsing by Author "Varela M.E."

Browsing by Author "Varela M.E."

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  • CARBON IN GLASS INCLUSIONS OF ALLENDE, VIGARANO, BALI, AND KABA (CV3) OLIVINES 
    Varela M.E.; Metrich N.; Bonnin-Mosbah M.; Kurat G. (2000)
    Carbon contents and distribution have been measured in glass inclusions in olivines of CV3 carbonaceous chondrites by using the 12C(d,p) 13C nuclear reaction. All olivines from the four studied meteorites had low carbon ...
  • CARBON IN OLIVINES OF CHONDRITIC METEORITES 
    Varela M.E.; Metrich N. (2000)
    Carbon concentrations have been measured, using the 12C(d,p)13C nuclear reaction, in olivines from different chondritic meteorites: CV3 (Allende and Ningqiang), CH (Acfer214), CM (Mighei and Murchison), LL3.1 (Bishunpur) ...
  • CHEMISTRY OF GLASS INCLUSIONS IN OLIVINES OF THE CR CHONDRITES RENAZZO, ACFER 182, AND EL DJOUF 001 
    Varela M.E.; Kurat G.; Brandstätter F.; Hoppe P. (2002)
    Glass inclusions in olivines of the Renazzo, El Djouf 001, and Acfer 182 CR-type chondrites are chemically divers and can be classified into Al-rich, Al-poor, and Na-rich types. The chemical properties of the glasses are ...
  • D'ORBIGNY: A NON-IGNEOUS ANGRITIC ACHONDRITE? 
    Kurat G.; Brandstätter F.; Varela M.E.; Weckwerth G.; Clayton R.N.; Weber H.W.; Schultz L.; Wäsch E.; Nazarov M.A. (2004)
    D'Orbigny is the sixth and by far the largest angrite known. Its bulk chemical and mineral chemical compositions, rare gas abundances and oxygen and rare gas isotope compositions fit the compositional ranges known from ...
  • GLASS-BEARING INCLUSIONS IN NAKHLA(SNC METEORITE) AUGITE: HETEROGENEOUSLY TRAPPED PHASES 
    Varela M.E.; Kurat G.; Clocchiatti R. (2001)
    Nakhla augite and olivine grains commonly contain glass-bearing inclusions. In contrast to olivines, augites host only one type of multiphase inclusions which consists of euhedral to subhedral augite, Ti-magnetite and ...
  • GLASSES IN THE D'ORBIGNY ANGRITE 
    Varela M.E.; Kurat G.; Brandstätter F.; Zinner E.; Métrich N.; Ntaflos T.; Sylvester P. (2003)
    The D'Orbigny angrite contains abundant glasses, a phase which has not been previously reported from any other angrite. Glasses fill in part open druses and intersticial spaces between major silicates, or occur as glass ...
  • LOW-DEGREE PARTIAL MELTING TRENDS RECORDED IN UPPER MANTLE MINERALS 
    Schiano P.; Bourdon B.; Clocchiatti R.; Massare D.; Varela M.E.; Bottinga Y. (1998)
    The study of glass inclusions inside mantle minerals provides direct information about the chemistry of naturally occurring mantle-derived melts and the fine-scale complexity of the melting process responsible for their ...
  • NITROGEN MICROANALYSIS OF GLASS INCLUSIONS IN CHONDRITIC OLIVINES BY NUCLEAR REACTION 
    Varela M.E.; Mosbah M.B.; Kurat G.; Gallien J.P. (2003)
    Measured were the abundance and distribution of nitrogen in glasses of glass inclusions in olivines of CV3, CO3, CR, C4, CH3, and LL chondritic meteorites by means of the 14N(d, p)15N nuclear reaction. Similar to what was ...