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238 U, 232 Th profiling and U-series isotope analysis of fossil teeth by laser ablation-ICPMS

Eggins, Stephen; Grun, Rainer; Pike, Alistair W G; Shelley, Michael; Taylor, Lois

Description

U and Th concentration profiles in fossil hominid and faunal teeth have been measured by laser ablation ICPMS. These profiles record diverse modes of U and Th uptake, particularly within enamel, that can be broadly related to the state of sample preservation. Observed U profiles are in general inconsistent with existing diffusion-adsorption models developed for U-uptake in bone and teeth. Where the models appear applicable, calculated diffusion rates are several orders of magnitude smaller than...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
URI: http://hdl.handle.net/1885/76189
Source: Quaternary Science Reviews
DOI: 10.1016/S0277-3791(03)00064-7

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