EVIDENCE FOR COMET STORMS IN METEORITE AGES

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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.

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Perlmutter, S. & Muller, R.A. October 1, 1987.

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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.

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  • Journal Name: Icarus

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  • Report No.: LBL-22659
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 938537
  • Archival Resource Key: ark:/67531/metadc893384

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  • October 1, 1987

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  • Sept. 27, 2016, 1:39 a.m.

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  • Sept. 30, 2016, 6:28 p.m.

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Perlmutter, S. & Muller, R.A. EVIDENCE FOR COMET STORMS IN METEORITE AGES, article, October 1, 1987; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc893384/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.