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Seawater ²³⁴U/ ²³⁸U recorded by modern and fossil corals

Chutcharavan, Peter M.; Dutton, Andrea; Ellwood, Michael


U-series dating of corals is a crucial tool for generating absolute chronologies of Late Quaternary sea-level change and calibrating the radiocarbon timescale. Unfortunately, coralline aragonite is susceptible to post-depositional alteration of its primary geochemistry. One screening technique used to identify unaltered corals relies on the back-calculation of initial ²³⁴U/²³⁸U activity (δ ²³⁴Ui) at the time of coral growth and implicitly assumes that seawater δ ²³⁴U has remained constant...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
Source: Geochimica et Cosmochimica Acta
DOI: 10.1016/j.gca.2017.12.017
Access Rights: Open Access


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