Uranium series dating

Unlike other commonly used radiometric dating techniques such as rubidium–strontium or uranium–lead dating, the uranium-thorium technique does not measure accumulation of a stable end-member decay product.

Instead, the uranium–thorium technique calculates an age from the degree to which secular equilibrium has been restored between the radioactive isotope thorium-230 and its radioactive parent uranium-234 within a sample.

Using state-of-the-art instrumentation, this method allows dating speleothems between essentially zero and 600,000 years before present.

Multiple age determinations are typically performed along the extension axis of a stalagmite to decipher its detailed growth history.

Ages between 1000 and 300,000 years have been reported. Pleistocene extinction of Genyornis newtoni: human impact on Australian megafauna. Non-destructive gamma spectrometric U-series dating. A computer program for radiocarbon age calibration. Last Ice Age millennial scale climate changes recorded in Huon Peninsula Corals.

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The contributions of uranium/thorium and marine palynology to the dating of the Lake Wangoom pollen record, western plains of Victoria, Australia.

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