Petrofabrics in fine-grained rims of Vigarano CV3 chondrite : insights from EBSD and AFM studies - Archive ouverte HAL
Communication Dans Un Congrès Année : 2013

Petrofabrics in fine-grained rims of Vigarano CV3 chondrite : insights from EBSD and AFM studies

Résumé

Fine grained rims (FGR) are commonly encountered around chondrules and CAI’s in CV carbonaceouschondrites. They are mostly composed by very fine grained (mi- cron to submicron) iron rich olivine.Whether the iron rich olivines are of nebular or parent body origin stays a matter of debate ([1],[2], [3]).While chemical and petrographic characterizations are abundant in the literature, only few studies concerningmicrotextures and fabrics of these fine grained olivines are available [4], [5], [6]. Recent EBSD study in Allende has stirred up the debate, since a spherical fabricaround chondrules has been discovered, supporting a nebular origin [5]. In order to further investigate the relationship between chondrules and fine grained rims,we present here EBSD and AFM analyses in Vigarano CV3 chondrite.
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Dates et versions

hal-01992705 , version 1 (24-01-2019)

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  • HAL Id : hal-01992705 , version 1

Citer

C. Soulie, Benoit Ildefonse, G. Libourel. Petrofabrics in fine-grained rims of Vigarano CV3 chondrite : insights from EBSD and AFM studies. 76th Annual Meeting of the Meteoritical Society, Jul 2013, Edmonton, Canada. pp.A324-A324. ⟨hal-01992705⟩
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