Possible Structures of Parent Bodies
Channel: Dominik Hezel
Date: 2019-10-22

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The undifferentiated asteroids were thermally altered to various degrees, and were thereby metamorphically changed. If there was a thermal gradient from the inside to the surface, the various petrologic types could have formed in the same asteroid. The maximum petrologic type in the center would depend on the peak temperature. The structure of such an asteroid resembles an onion, with shells of various petrologic types. Asteroids were particularly destroyed again in the early solar system, their debris mixed and then re-accreted into new asteroids. Various lithologies might then occur in direct contact to each other. The structure of such asteroids resemble breccias, and are called ›rubble piles‹