EVIDENCE FOR COMET STORMS IN METEORITE AGES
Journal Article
·
· Icarus
OSTI ID:938537
Clustering of cosmic-ray exposure ages of H chondritic meteorites occurs at 7 {+-} 3 and 30 {+-} 6 Myr ago. There is independent evidence that comet storms have occurred at the same times, based on the fossil record of family and genus extinctions, impact craters and glass, and geomagnetic reversals. We suggest that H chondrites were formed by the impact of shower comets on asteroids. The duration of the most recent comet shower was {le} 4 Myr, in agreement with storm theory.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Physics Division
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 938537
- Report Number(s):
- LBL-22659; TRN: US200820%%149
- Journal Information:
- Icarus, Journal Name: Icarus
- Country of Publication:
- United States
- Language:
- English
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