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. Author manuscript; available in PMC: 2020 Sep 11.
Published in final edited form as: Nature. 2020 Mar 11;579(7798):240–244. doi: 10.1038/s41586-020-2069-3

Figure 1. ε100Ru data for Archean and Paleoproterozoic rocks, the modern mantle and chondrites.

Figure 1

Shown are the individual results for all analyzed samples (Extended data Table 1) in comparison to the composition of the modern mantle12. The uncertainties for individual data points reflect the external uncertainty of the method (2 s.d. for samples measured n<4 times) or 95% confidence intervals of replicate analyses of a given sample (if n≥4). The mean values for 3.8–3.7 Gyr-old Eoarchean samples from the Itsaq gneiss complex (IGC) in SW Greenland (NUB: Narssaq ultramafic body; SOISB: south of Isua supracrustal belt; ISB: Isua supracrustal belt; Ujargssuit Nunât layered intrusion) and chromitite samples from the Bushveld complex are shown as a solid vertical line. The darker grey and blue areas represent the respective 95% confidence interval uncertainties. Light grey and blue areas limited by dashed lines indicate the 2 s.d. uncertainty of the mean values. The uncertainty for the modern mantle composition is 2 s.d.12.