Was there a catastrophic collision of the H chondrite parent body about 200 m.y. ago?

Details Was there a catastrophic collision of the H chondrite parent body about 200 m.y. ago? Was there a catastrophic collision of the H chondrite parent body about 200 m.y. ago?

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28...23a&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. .23.

Statistics

Chondrites, Meteorite Collisions, Heating, Helium, Statistical Analysis, Solar System Evolution

Scientific paper

While poor statistics preclude arriving at unequivocal conclusions regarding the H chondrites, it is surmised here that about 2 percent of the parent body from which the H chondrites originate was significantly heated about 200 million years ago. This heating was collisional, and resulted in almost complete loss of radiogenic He from this region of the parent body.

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