Extended Data Fig. 4: Ruthenium isotope plots illustrating systematic compositional differences between EC, OC and CI, modern mantle and the pre-late-veneer mantle in comparison with mixing lines calculated between the modern mantle composition and isotopic variations caused by variable contributions of s-process Ru nuclides, a fissiogenic Ru component and variations of nuclear field-shift induced isotope fractionations.
From: Ruthenium isotope vestige of Earth’s pre-late-veneer mantle preserved in Archaean rocks
a, Ruthenium isotope data for the Eoarchaean mantle of southwest Greenland, the modern mantle and the three types of carbonaceous chondrite in comparison with a mixing line calculated between the composition of the modern mantle (ε102Ru = ε100Ru = 0) and an s-process component34 (dashed line) and the slope calculated for a nuclear field shift-induced (NSF) fractionation51 (solid black line). b, Ruthenium isotope composition of the Eoarchaean mantle in comparison with mixing lines calculated between the composition of the modern mantle (ε96Ru = ε100Ru = 0) and a fissiogenic Ru component53 (dotted line), an s-process component34 (dashed line) and the slope calculated for an NSF isotope fraction51 (solid black line).
