“…Moreover, as D REE values increase with atomic numbers, garnet is the only rock-forming mineral that can substantially enhance both (La/Yb) N and (Dy/Yb) N (or (Gd/Yb) N ) of magmas (e.g., Klein et al, 2000). Thus, the positively correlated high (Dy/Yb) N and (La/Yb) N ratios (Fig.…”
Section: Adakitic (Groups I and Ii) Rocksmentioning
“…Moreover, as D REE values increase with atomic numbers, garnet is the only rock-forming mineral that can substantially enhance both (La/Yb) N and (Dy/Yb) N (or (Gd/Yb) N ) of magmas (e.g., Klein et al, 2000). Thus, the positively correlated high (Dy/Yb) N and (La/Yb) N ratios (Fig.…”
Section: Adakitic (Groups I and Ii) Rocksmentioning
“…In addition, they have low (La/Yb) N and Sr/Y ratio, suggesting that their parental magmas were generated under low pressures without garnet residual during the partial melting (e.g. Martin et al, 2005;Klein et al, 2000;Pertermann et al, 2004).…”
Section: Genetic Type and Petrogenesismentioning
confidence: 99%
“…Data sources for partition coefficients are: Ds. for amphibole, from Xiong (2006) and Klein et al (1997); for clinopyroxene, from Klein et al (2000) and Barth et al (2002); for plagioclase, from Rollinson (1993). Representative calculations are listed for batch melting with residue as 70% amphibole + 10% clinopyroxene + 20% plagioclase(*).…”
“…The low TiO 2 (1.2 wt%) and high TiO 2 (2.5 wt%) protoliths produce 0.1-0.58 wt% and 1.2-1.9 wt% rutile, respectively, during partial melting. D Nb and D Ta for garnet-felsic melt (D Nb = 0.04, D Ta = 0.08) and cpx-melt (D Nb = 0.005, D Ta = 0.014) from Klein et al (2000). Chondrite Nb/Ta = 19.9 from Mü nker et al (2003). fraction is lower than $20%, the Nb/Ta ratio increases rapidly with decreasing degree of melting due to increasing H 2 O content in the melt.…”
Section: Nb/ta Fractionation During Partial Meltingmentioning
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