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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 |
---|---|---|---|---|
2.4750 | -2.3580 | -3.6330 | -3.645 | |
2.6530 | -2.5250 | -3.9230 | -3.905 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
Northwest Africa 2653 | CV7 | 2.6730 | -2.3330 | -3.723 | 0.11 | 0.11 | 0.05 |
Northwest Africa 3133 | CV7 | 2.4600 | -2.2500 | -3.529 | -0.1 | 0.19 | 0.25 |
Northwest Africa 12565 | CV3 | 2.6970 | -2.2400 | -3.642 | 0.13 | 0.2 | 0.13 |
Northwest Africa 11904 | CV3 | 2.3170 | -2.3590 | -3.564 | -0.25 | 0.08 | 0.21 |
Frontier Mountain 97002 | CV3 | 2.4500 | -2.1600 | -3.434 | -0.11 | 0.28 | 0.34 |
Ramlat Fasad 027 | CO3 | 2.2800 | -2.3200 | -3.506 | -0.28 | 0.12 | 0.27 |
Northwest Africa 3004 | CV3 | 2.4900 | -2.0700 | -3.365 | -0.07 | 0.37 | 0.41 |