Fig. 6: Compiled shock and phosphate U–Pb age data for meteorites.
From: Ancient and recent collisions revealed by phosphate minerals in the Chelyabinsk meteorite
In (a) recent Solar System history and b early Solar System history. a, b–i Stacked Gaussian probability distributions of meteorite phosphate U–Pb ages. a, b-ii Compilation of meteorites and their U–Pb phosphate ages. We divide meteorites by shock stage (see Electronic Appendix) into weakly shocked (S1-3) and highly shocked (S4-6), with the latter being sufficient for full phosphate U–Pb resetting39. Estimated limits for temporal range of parent body thermal metamorphism are shaded in red. Lower intercept evidence for an L-type break-up event is found at around 470 Ma, as well as a comparatively recent LL-type break-up event involving Chelyabinsk. A cluster of upper-intercept ages is clearly defined at 4480–4440 Ma, which may record a major dynamical event in the Solar System. Data from refs. 9,17,26,42,43,45,46,57,58,59. Error bars are 2σ.
