Beryllium-10 contents of shergottites, nakhlites, and Chassigny

D. K. Pal, C. Tuniz, R. K. Moniot, W. Savin, T. Kruse, G. F. Herzog

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Accelerator mass spectrometry gives the following 10Be contents (dpm/kg) for the SNC meteorites: Shergotty, 13.0 ± 1.5 and 17.3 ± 2.7; Zagami, 18.6 ± 2.5 and 20.0 ± 3.2; ALHA 77005, 15 ± 3; EETA 79001A, 7.8 ± 1.1 and 6.3 ± 0.5; EETA 79001B, 8.5 ± 1.1; Nakhla, 19.7 ± 3.3; Lafayette, 18.1 ± 2.5; Governador Valadares, 25.6 ± 3.6; Chassigny, 20.5 ± 3.1. The 10Be contents of the NC meteorites indicate that significant accumulation of cosmogenic nuclides occurred in decimeter rather than planetary-size bodies. The agreement of the 3He, 21Ne, and 10Be exposure ages of the shergottites also supports small-body irradiation. A long terrestrial age for EETA 79001 appears unlikely.

Original languageEnglish (US)
Pages (from-to)2405-2409
Number of pages5
JournalGeochimica et Cosmochimica Acta
Volume50
Issue number11
DOIs
StatePublished - Nov 1986

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology

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