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. 2015 Sep 25;1(8):e1500377. doi: 10.1126/sciadv.1500377

Fig. 3. D/H versus 36Ar/H2O mixing of 67P/CG-like and asteroidal materials.

Fig. 3

The asteroidal composition is represented by the Orgueil (CI) and Murchison (CM) carbonaceous chondrites. CI/CM chondrites are considered as the best representatives of volatile-rich primitive meteorites (19). Cometary data: this work, Altwegg et al. (10). Meteorite data: Mazor et al., Bogard et al., and Kerridge (20–22). Earth data, surface inventory: Lécuyer et al. and Ozima et al. (12, 13). Range of estimates for bulk Earth: Marty and Halliday (17, 18).