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Garnets isotopic ratios

Valley, J.W., Kitchen, N., Kohn, M.J., Niendorf, C.R. and Spicuzza, M.J. 1995 UWG-2, a garnet standard for oxygen isotope ratios strategies for high precision and accuracy with laser heating. Geochimica et Cosmochimica Acta 59 5223-5231. [Pg.139]

Large instrumental mass fractionations have been observed during measurements of oxygen isotope ratios on Fe-Mg-Ca garnets in SIMS.83 Part of this fractionation depends on crystal structure and mineral composition. [Pg.230]

Decoupling between He and Ne is also required, since only MORE He isotope ratios are observed in the apatites. Also, Matsumoto et al. (2000) subsequently reported similar Ne characteristics in a garnet pyroxenite with MORE He/ He ratios. Since all the Ne data do overlap with MORE Ne when two sigma errors are considered (rather than the one sigma errors routinely reported for noble gas analyses), the possibility that there is hotspot Ne in the xenoliths idea requires confirmation. [Pg.390]

See other pages where Garnets isotopic ratios is mentioned: [Pg.179]    [Pg.104]    [Pg.59]    [Pg.64]    [Pg.246]    [Pg.435]    [Pg.435]    [Pg.572]    [Pg.1566]    [Pg.1621]    [Pg.1903]    [Pg.363]    [Pg.380]    [Pg.380]    [Pg.385]    [Pg.412]    [Pg.258]    [Pg.61]    [Pg.293]    [Pg.724]    [Pg.858]    [Pg.947]    [Pg.948]    [Pg.1008]    [Pg.1010]    [Pg.1143]    [Pg.1198]    [Pg.1359]    [Pg.1377]    [Pg.1514]    [Pg.1567]    [Pg.1567]    [Pg.1569]    [Pg.1573]    [Pg.1592]    [Pg.1809]    [Pg.20]    [Pg.156]    [Pg.245]    [Pg.246]    [Pg.307]    [Pg.309]    [Pg.443]    [Pg.500]    [Pg.23]    [Pg.186]   
See also in sourсe #XX -- [ Pg.215 , Pg.216 , Pg.217 , Pg.222 , Pg.223 , Pg.224 , Pg.225 , Pg.231 ]



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