Start Dendrochronology vs carbon dating

Dendrochronology vs carbon dating

If more Miyake events could be found, then tree-ring data taken from archaeological items and carbon-14 data could be used to determine when historic events occurred exactly.

The TL operator generally takes samples for dating from the bottom, avoiding damage to the image of the artwork.

They often have to rely on ancient records of rare astronomical events such as the Assyrian eclipse, a solar eclipse which occurred on the 15 June 763 CE to estimate the age of historical events.

Radiocarbon dating currently provides the best estimates, but are only accurate to within 200 to 300 years.

The two spikes, known as Miyake events, can be detected in the unusually high levels of radioactive carbon-14 in tree-rings that grew over that time period.

Carbon-14 - an unstable isotope of carbon - ends up in plant tissue through photosynthesis.

The time markers will be present in every living tree and other during that time period, allowing the date to be marked for timber used in ancient buildings or other artefacts from plants.

The spike for 775 CE has already been found in tree-rings in Germany, Russia, the US and New Zealand.

However, producing fakes with this method calls for expertise on the subject, as well as expensive instruments.