Fig. 9.

Regressed or averaged ¹⁸⁷Os/¹⁸⁸Os (a), Ru/Ir (b) and Pd/Ir (c) versus formation ages (listed in Table 1) for the lunar impact melt rocks examined here and in literature. Vertical dashed lines denote the period of large-basin formation during the putative late heavy bombardment with Imbrium and Serenitatis events highlighted. Horizontal field represents the range of known chondrite groups. Symbols and data sources are the same as Fig. 6.