This is an interesting article about the new isotope-based technique to measure the age of antique wood. Previously, dating the wood was based on the rings of the tree (known as dendrochronology). (See example above.)     A tree ring carefully dissected prior to chemical analysis.  Credit: UK Oak Project     Summary: This new dating technique will be helpful to date older wood samples in Britain.   https://www.swansea.ac.uk/press-office/news-even