|
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 |
---|---|---|---|---|
-15.420 | -18.662 | -10.520 | -10.644 | Δ17O off by 0.124 |
-11.700 | -15.455 | -9.277 | -9.371 | Δ17O off by 0.094 |
-4.201 | -7.616 | -5.398 | -5.431 | |
-2.390 | -6.818 | -5.556 | -5.575 |
Name | Class | δ18O | δ17O | Δ17O: calc | Δ δ18O | Δ δ17O | Δ Δ17O |
---|---|---|---|---|---|---|---|
Northwest Africa 14179 | C3-ung | -8.2690 | -12.0710 | -7.771 | 0.16 | 0.07 | -0.02 |
Northwest Africa 8175 | CK4 | -8.0490 | -11.9070 | -7.722 | 0.38 | 0.23 | 0.03 |