Material evolution caused by catastrophic celestial impacts at the early solar system

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At the early solar system, it is well acknowledged that many celestial bodies collided with each other, changing their material compositions and combining together. Present planets must have been formed through such processes. In this study, based on elemental and mineralogical compositions of HED meteorites which originated in an asteroid 4Vesta were targeted, the impact processes were investigated. As a result, it was found that eucrite meteorites (a group of HED meteorites) hold impact records caused by iron meteorites ans/or stony iron meteorites and that howardite meteorites (another group of HED meteorites) contain chondritic materials.