The method was invented in the 1920s by astronomer Andrew Ellicott Douglass and archaeologist Clark Wissler.Tree rings are created by the tree as it grows in girth, and the width of a given tree ring is dependent on climate, so a stand of trees will all have a near-identical pattern of tree rings.Dendrochronology, or tree-ring dating, is the study of growth rings in deciduous trees to identify absolute dates of wooden objects.
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