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Oxygen isotope composition of CR and CH chondrites. Data for CH chondrites from Clayton and Mayeda (1999), CR chondrites from Clayton and Mayeda (1999) and Schrader et al. (2011). 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 |
---|---|---|---|---|
7.0480 | 2.7290 | -0.9780 | -0.936 | |
7.3910 | 2.8990 | -0.9880 | -0.944 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
Northwest Africa 2352 | Ureilite | 7.1600 | 2.8600 | -0.863 | -0.06 | 0.05 | 0.08 |
Northwest Africa 2352 | Ureilite | 7.3700 | 2.8900 | -0.942 | 0.15 | 0.08 | -0 |
Northwest Africa 7680 | Achondrite-ung | 7.0400 | 2.6500 | -1.011 | -0.18 | -0.16 | -0.07 |
Northwest Africa 11558 | Achondrite-ung | 6.9900 | 2.7160 | -0.919 | -0.23 | -0.1 | 0.02 |
Northwest Africa 12208 | Ureilite | 7.5000 | 2.7100 | -1.19 | 0.28 | -0.1 | -0.25 |
Jiddat al Harasis 422 | Ureilite | 7.5700 | 2.8700 | -1.066 | 0.35 | 0.06 | -0.13 |
Northwest Africa 10085 | K4 | 6.8730 | 2.6740 | -0.9 | -0.35 | -0.14 | 0.04 |
Northwest Africa 11558 | Achondrite-ung | 7.5730 | 3.0200 | -0.918 | 0.35 | 0.21 | 0.02 |
Tin-Essako 001 | Achondrite-ung | 7.3740 | 3.2030 | -0.631 | 0.15 | 0.39 | 0.31 |
Northwest Africa 5517 | Achondrite-ung | 6.8070 | 2.6510 | -0.889 | -0.41 | -0.16 | 0.05 |
Lewis Cliff 88774 | Ureilite-an | 7.6200 | 3.0300 | -0.932 | 0.4 | 0.22 | 0.01 |
Northwest Africa 4508 | Ureilite | 7.6600 | 2.9700 | -1.013 | 0.44 | 0.16 | -0.07 |