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Shock Melting of the Canyon Diablo Impactor: Constraints from Nickel-59 Contents and Numerical Modeling

Schnabel, C; Pierazzo, E; Xue, S; Herzog, G; Masarik, J; Cresswell, Richard; di Tada, M.; Liu, K.; Fifield, L Keith


Two main types of material survive from the Canyon Diablo impactor, which produced Meteor Crater in Arizona: iron meteorites, which did not melt during the impact; and spheroids, which did. Ultrasensitive measurements using accelerator mass spectrometry show that the meteorites contain about seven times as much nickel-59 as the spheroids. Lower average nickel-59 contents in the spheroids indicate that they typically carne from 0.5 to 1 meter deeper in the impactor than did the meteorites....[Show more]

CollectionsANU Research Publications
Date published: 1999
Type: Journal article
Source: Science
DOI: 10.1126/science.285.5424.85


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