Radiocarbon dating waikato university

Radiocarbon dating, which depends on the steady decay of carbon-14, is less reliable if an artefact is older than 16,000 years.But the changes in radiocarbon, and dating, fluctuate greatly up to 45,000 years, the limit of the study.The Tree-Ring Laboratory works primarily with kauri (Agathis australis). Its clear rings, longevity, use as a building material and excellent preservation in swamps make it an ideal species for development of long chronologies, palaeoenvironmental reconstruction, and historical archaeology.The discovery of a significant ENSO signal in its growth rings means that kauri chronologies are a potentially valuable climate proxy.To send this article to your Kindle, first ensure [email protected] added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account.Then enter the ‘name’ part of your Kindle email address below. Note you can select to send to either the @free.or @variations.

Past climate change, variability and extremes in New Zealand: This was a five year research programme funded by the Foundation for Research Science & Technology (FRST) and led by Paul Williams.

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