Thermal Evolution of Volatile-Rich Planetesimals: Implications for Lithological Diversity in Ryugu and CI Chondrites

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Yamazaki S.* Mikouchi T. Zolensky M. E.

METSOC 2026 abstract (PDF)

“We modeled thermal evolution of volatile-rich planetesimals to explain lithological diversity in Ryugu and CI chondrites. Body size (50–100 km), accretion timing (~2–3 Myr), and water/rock ratio (~0.6–0.9) control internal temperature and diversity.”

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