Exposure history of the Torino meteorite

R. Wieler, Th Graf, P. Signer, S. Vogt, G. F. Herzog, C. Tuniz, D. Fink, L. K. Fifield, J. Klein, R. Middleton, A. J T Jull, P. Pellas, J. Masarik, G. Dreibus

Research output: Contribution to journalArticle

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Abstract

We determined He, Ne, Ar, 10Be, 26Al, 36Cl, and 14C concentrations, as well as cosmic-ray track densities and halogen concentrations in different specimens of the H6 chondrite Torino, in order to constrain its exposure history to cosmic radiation. The Torino meteoroid had a radius of ∼20 cm and travelled in interplanetary space for 2.5-10 Ma. Earlier, Torino was part of a larger body. The smallest possible precursor had a radius of 55 cm and a journey through space longer than ∼65 Ma. If the first-stage exposure took place in a body with a radius of >3 m or in the parent asteroid, then it lasted nearly 300 Ma. The example of Torino shows that it is easy to underestimate first-stage exposure ages when constructing two-stage histories.

Original languageEnglish (US)
Pages (from-to)265-272
Number of pages8
JournalMeteoritics and Planetary Science
Volume31
Issue number2
StatePublished - Mar 1996

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ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Wieler, R., Graf, T., Signer, P., Vogt, S., Herzog, G. F., Tuniz, C., ... Dreibus, G. (1996). Exposure history of the Torino meteorite. Meteoritics and Planetary Science, 31(2), 265-272.

Exposure history of the Torino meteorite. / Wieler, R.; Graf, Th; Signer, P.; Vogt, S.; Herzog, G. F.; Tuniz, C.; Fink, D.; Fifield, L. K.; Klein, J.; Middleton, R.; Jull, A. J T; Pellas, P.; Masarik, J.; Dreibus, G.

In: Meteoritics and Planetary Science, Vol. 31, No. 2, 03.1996, p. 265-272.

Research output: Contribution to journalArticle

Wieler, R, Graf, T, Signer, P, Vogt, S, Herzog, GF, Tuniz, C, Fink, D, Fifield, LK, Klein, J, Middleton, R, Jull, AJT, Pellas, P, Masarik, J & Dreibus, G 1996, 'Exposure history of the Torino meteorite', Meteoritics and Planetary Science, vol. 31, no. 2, pp. 265-272.
Wieler R, Graf T, Signer P, Vogt S, Herzog GF, Tuniz C et al. Exposure history of the Torino meteorite. Meteoritics and Planetary Science. 1996 Mar;31(2):265-272.
Wieler, R. ; Graf, Th ; Signer, P. ; Vogt, S. ; Herzog, G. F. ; Tuniz, C. ; Fink, D. ; Fifield, L. K. ; Klein, J. ; Middleton, R. ; Jull, A. J T ; Pellas, P. ; Masarik, J. ; Dreibus, G. / Exposure history of the Torino meteorite. In: Meteoritics and Planetary Science. 1996 ; Vol. 31, No. 2. pp. 265-272.
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AU - Fifield, L. K.

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