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Title: Annama H chondrite—Mineralogy, physical properties, cosmic ray exposure, and parent body history
Authors: Kohout, T.
Haloda, J.
Halodová, P.
Meier, M. M. M.
Maden, C.
Busemann, H.
Laubenstein, M.
Caffee, M. W.
Welten, K. C.
Hopp, J.
Trieloff, M.
Mahajan, R. R.
Naik, S.
Trigo-Rodriguez, J. M.
Moyano-Cambero, C. E.
Oshtrakh, M. I.
Maksimova, A. A.
Chukin, A. V.
Semionkin, V. A.
Karabanalov, M. S.
Felner, I.
Petrova, E. V.
Brusnitsyna, E. V.
Grokhovsky, V. I.
Yakovlev, G. A.
Gritsevich, M.
Lyytinen, E.
Moilanen, J.
Kruglikov, N. A.
Ishchenko, A. V.
Issue Date: 2017
Publisher: University of Arkansas
Citation: Annama H chondrite—Mineralogy, physical properties, cosmic ray exposure, and parent body history / T. Kohout, J. Haloda, P. Halodová, et al. — DOI 10.1111/maps.12871 // Meteoritics and Planetary Science. — 2017. — Vol. 52. — Iss. 8. — P. 1525-1541.
Abstract: The fall of the Annama meteorite occurred early morning (local time) on April 19, 2014 on the Kola Peninsula (Russia). Based on mineralogy and physical properties, Annama is a typical H chondrite. It has a high Ar-Ar age of 4.4 Ga. Its cosmic ray exposure history is atypical as it is not part of the large group of H chondrites with a prominent 7–8 Ma peak in the exposure age histograms. Instead, its exposure age is within uncertainty of a smaller peak at 30 ± 4 Ma. The results from short-lived radionuclides are compatible with an atmospheric pre-entry radius of 30–40 cm. However, based on noble gas and cosmogenic radionuclide data, Annama must have been part of a larger body (radius >65 cm) for a large part of its cosmic ray exposure history. The 10Be concentration indicates a recent (3–5 Ma) breakup which may be responsible for the Annama parent body size reduction to 30–35 cm pre-entry radius. © The Meteoritical Society, 2017.
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85026678259
PURE ID: 1972090
ISSN: 10869379
DOI: 10.1111/maps.12871
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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