Is dendrochronology an absolute dating method?

Dendrochronology is a form of absolute dating that studies tree rings in order to form a chronological sequence of a specific area or region. Absolute dating methods require regular, repetitive processes that we can measure.

How do you date a tree ring?

The most common, most accurate way to find the age of a tree is to count the number of rings visible when their trunk is cut horizontally. Each year, most trees add an extra layer of growth to their trunks. Over time, their trunks get thicker and thicker.

How do you read tree rings?

In summer, growth is slower; the wood has smaller cells and is darker. So when the tree is cut, the layers appear as alternating rings of light and dark wood. Click the cross section of the tree ring above to view the whole ring as it came from the tree. Count the dark rings, and you know the trees age.