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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 |
---|---|---|---|---|
5.0170 | 1.4110 | -1.2380 | -1.198 | |
5.6290 | 1.8860 | -1.0860 | -1.041 | |
6.8730 | 2.6740 | -0.9550 | -0.9 | Δ17O off by 0.055 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
Sayh al Uhaymir 290 | CH3 | 5.7100 | 1.9100 | -1.059 | -0.13 | -0.08 | -0.01 |
Northwest Africa 10324 | CR2 | 5.9500 | 1.7900 | -1.304 | 0.11 | -0.2 | -0.26 |
Grapevine Mesa | CBa | 5.8400 | 2.2390 | -0.798 | 0 | 0.25 | 0.25 |
Ooldea 014 | Achondrite-prim-ung | 5.5510 | 1.9820 | -0.905 | -0.29 | -0.01 | 0.14 |
Bir Ounane 001 | Achondrite-prim | 5.7600 | 1.6980 | -1.297 | -0.08 | -0.29 | -0.25 |
Northwest Africa 6962 | Achondrite-ung | 6.1300 | 2.1910 | -0.997 | 0.29 | 0.2 | 0.05 |
Northwest Africa 6962 | Achondrite-ung | 6.1440 | 2.1900 | -1.005 | 0.3 | 0.2 | 0.04 |
Ooldea 014 | Achondrite-prim-ung | 6.0560 | 2.2930 | -0.856 | 0.22 | 0.3 | 0.19 |
Northwest Africa 12543 | Winonaite | 5.5830 | 2.3450 | -0.558 | -0.26 | 0.35 | 0.49 |
Grapevine Mesa | CBa | 5.9680 | 2.4090 | -0.694 | 0.13 | 0.42 | 0.35 |
Northwest Africa 11511 | Ureilite-an | 6.1280 | 1.6220 | -1.565 | 0.29 | -0.37 | -0.52 |
Northwest Africa 11807 | Winonaite | 5.5670 | 2.3950 | -0.5 | -0.27 | 0.4 | 0.55 |
Northwest Africa 11807 | Winonaite | 5.7580 | 2.4770 | -0.517 | -0.08 | 0.49 | 0.53 |