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Title: Exposure history of the Torino meteorite
Authors: 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
Keywords: Meteorites
Radiation doses
Interplanetary space
Issue Date: Mar-1996
Publisher: Wiley
Citation: Wieler, R., Graf, T., 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. (1996). Exposure history of the Torino meteorite. Meteoritics & Planetary Science, 31(2), 265-272. doi:10.1111/j.1945-5100.1996.tb02022.x
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. © 1999-2021 John Wiley & Sons, Inc.
ISSN: 1945-5100
Appears in Collections:Journal Articles

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