Seawater ²³⁴U/ ²³⁸U recorded by modern and fossil corals
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]
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|Source:||Geochimica et Cosmochimica Acta|
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