Parent bodies of L and H chondrites: Times of catastrophic events.

Details Parent bodies of L and H chondrites: Times of catastrophic events. Parent bodies of L and H chondrites: Times of catastrophic events.

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998m%26ps...33..145a&link_type=abstract

Meteoritics & Planetary Science, vol. 33, no. 1, pages 145-152.

Astronomy and Astrophysics

Astrophysics

20

Scientific paper

An analysis of the distribution of 3He and 4He in L and H chondrites has shown that the parent body of L chondrites underwent a catastrophic collision in space 340 ( 50 Myr. This age differs considerably from the collision age of 520 ( 60 Myr given previously (Heymann, 1967). The parent body of H chondrites may also have undergone local heating and degassing about 200 Myr ago. Data for L chondrites argue in favour of Antarctic and non-Antarctic meteorites having originated from a common parent body.

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