A study on the chronology and evolution of the early solar system

Abstract

Ages of meteorite parent body accretion can be estimated based on chronological information and thermal history of the parent body. In this way, it was found that the accretion occurred in the order of irons, achondrites, ordinary chondrites and carbonaceous chondrites. It started soon after the CAI formation and continued for 3.5 million years until carbonaceous chondrites accreted. These accretion ages are correlated with Cr-54 anomalies. This suggests that Cr-54 produced by a supernova was injected into the forming solar nebula.