Tree ring dating dendrochronology
The tree rings were dated through dendrochronology.
At present, tree rings are still used to calibrate radiocarbon determinations.
They can determine the exact calendar year each tree ring was formed.
Dendrochronological findings played an important role in the early days of radiocarbon dating.
The most popular and often used method for calibration is by dendrochronology.It is also worth noting that the half-life used in carbon dating calculations is 5568 years, the value worked out by chemist Willard Libby, and not the more accurate value of 5730 years, which is known as the Cambridge half-life.