Each ring marks a complete cycle of seasons, or one year, in the trees life. As of 2020, securely dated tree-ring data for the northern hemisphere are available going back 13,910 years.

Is Tree-ring dating absolute?

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.

Is tree-ring dating absolute?

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.