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Oxygen isotope composition of CI and CM chondrites. Data for CMs and CIs from Clayton and Mayeda (1999); CVs and CKs from Greenwood et al. (2010); COs from Greenwood and Franchi (2004). TFL: terrestrial fractionation line, Y&R: slope 1 line (Young and Russell, 1998), CCAM: carbonaceous chondrite anhydrous mineral line (Clayton et al., 1977; Clayton and Mayeda, 1999). |
δ18O | δ17O | Δ17O: given | Δ17O: linear | Comment |
---|---|---|---|---|
5.3032 | 0.0806 | -2.6770 | -2.677 | |
3.0272 | -0.7302 | -2.3040 | -2.304 | |
3.2993 | -0.5784 | -2.2940 | -2.294 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
Northwest Africa 5351 | Eucrite-mmict | 3.7000 | -0.2190 | -2.143 | -0.18 | 0.19 | 0.28 |
Northwest Africa 2180 | CV3 | 4.0320 | -0.7180 | -2.815 | 0.16 | -0.31 | -0.39 |
Northwest Africa 11904 | CV3 | 4.2330 | -0.3490 | -2.55 | 0.36 | 0.06 | -0.13 |
Tintigny | Eucrite-pmict | 3.7560 | 0.0000 | -1.953 | -0.12 | 0.41 | 0.47 |