Figure 2
From: Non-traditional stable isotope behaviors in immiscible silica-melts in a mafic magma chamber
Observed and predicted stable isotope compositions of granitoids.
(a) Fe isotopes from Telus, et al.16, Sossi, et al.17, Zambardi, et al.23, Foden, et al.15 and references therein (compiled in Supplementary Information). The δ57Fe value of terrestrial basalts (MORBs) is from Teng, et al.10. The diffusional fractionation trend 1 and 2 (orange and green dash lines) are calculated using Eq. (6) based on data reported in Table 1. (b) Mg isotopes from Telus, et al.16 and references therein (Supplementary Information). The δ26Mg value of terrestrial basalts (MORBs) is from Teng, et al.3. The diffusional fractionation trend 1 and 2 (orange and green dash lines) are calculated using Eq. (9) based on data reported in Table 2. (c) Plot of δ30Si vs. SiO2 displaying an “igneous array” (blue line) for Si isotopes from Savage, et al.46, Savage, et al.59 and Zambardi, et al.23 (Supplementary Information). The diffusional fractionation trend 1 and 2 (orange and green dash lines) are calculated using Eq. (9) based on data reported in Table 3. (d) Li isotope data from Li, et al.11 and Teng, et al.60 (Supplementary Information). The diffusional fractionation trend 1 and 2 (orange and green dash lines) are calculated using Eq. (9) based on data reported in Table 4.
