Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Davis, Henry Gassaway to Diamond


rings tree

Dendrochronology, dating of past events by the study of tree rings. A hollow tube is inserted into the tree trunk and a section from bark to center removed. The annual rings are counted and compared with rings from dead trees so that the chronology may be extended further back in time.

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