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Impact processing of chondritic planetesimals: Siderophile and volatile element fractionation in the Chico L chondrite

Norman, Marc; Mittlefehldt, David W

Description

A large impact event 500 Ma ago shocked and melted portions of the L-chondrite parent body. Chico is an impact melt breccia produced by this event. Sawn surfaces of this 105 kg meteorite reveal a dike of fine-grained, clast-poor impact melt cutting shocked host chondrite. Coarse (1-2 cm diameter) globules of FeNi metal + sulfide are concentrated along the axis of the dike from metal-poor regions toward the margins. Refractory lithophile element abundance patterns in the melt rock are parallel...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
URI: http://hdl.handle.net/1885/89619
Source: Meteoritics and Planetary Science

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