Dendrochronology, also called tree-ring dating, the scientific discipline concerned with dating and interpreting past events, particularly paleoclimates and climatic trends, based on the analysis of tree rings.

What called tree-ring?

Tree rings are sometimes called annual rings, although both names are often used interchangeably. The study of tree rings and their use in dating past events is called dendrochronology. When a tree has been chopped down, the cross-section through the trunk reveals a concentric pattern of rings.

Is tree-ring dating relative?

A scientific date is either absolute (specific to one point in time) or relative (younger or older than something else). Dendrochronology, or tree-ring dating, provides absolute dates in two different ways: directly, and by calibrating radiocarbon results.

Who created tree-ring dating?

astronomer A. E. Douglass Developed by astronomer A. E. Douglass in the 1920s, dendrochronology—or tree-ring dating—involves matching the pattern of tree rings in archaeological wood samples to the pattern of tree rings in a sequence of overlapping samples extending back thousands of years.

How can you tell how old is a tree?

If you know when the tree was planted, you can easily and accurately determine its age. The second most accurate way to estimate tree age is to count the annual rings of wood growth. Annual rings can be counted using two different methods. You can extract an increment core from the tree using an increment borer.