Fig. 1.

Plot of ε⁵⁰Ti versus ε⁵⁴Cr for CC (blue) and NC (red) meteorites, with Earth shown in green. Data fields are drawn based on data from Shukolyukov and Lugmair (2006), Trinquier et al. (2007, 2009), Qin et al. (2010), Yamakawa et al. (2010); Yamashita et al. (2010), Zhang et al. (2011), Zhang et al. (2012), Schiller et al. (2014), Sanborn et al. (2019), and Williams et al. (2020). ε⁵⁰Ti and ε⁵⁴Cr are defined as the mass-independent deviations in the ⁵⁰Ti/⁴⁷Ti and ⁵⁴Cr/⁵²Cr ratios from terrestrial standards in parts per 10⁴.