The formation and evolution of ordinary chondrite parent bodies

Pierre Vernazza, Brigitte Zanda, Tomoki Nakamura, Edward Scott, Sara Russell

研究成果: Chapter

16 被引用数 (Scopus)


Ordinary chondrites (OCs) are by far the most abundant meteorites (80% of all falls). Their origin has long been the matter of a heated debate. About 30 years ago (e.g., Pellas, 1988), it was proposed that OCs should originate from S-type bodies (the most abundant asteroid spectral types in the inner part of the asteroid belt), but the apparent discrepancy between S-type asteroid and OC reflectance spectra generated what was known as the S-type/OC conundrum. This paradox has gradually been resolved over the years. It is now understood that space weathering processes are responsible for the spectral mismatch between S-type bodies and OCs. Furthermore, both telescopic observations and the first asteroid sample return mission (Hayabusa) indicate that most S-type bodies have mineralogies similar to those of OCs. Importantly, the S-type/OC link, which has remained sterile for more than 30 years, has been delivering fundamental constraints on the formation and evolution of planetesimals over the recent years.

ホスト出版物のタイトルAsteroids IV
出版社University of Arizona Press
出版ステータスPublished - 2015 1月 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)


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