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dendrochronology
(redirected from Growth rings)

   Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.01 sec.
dendrochronology: see dating dating, the determination of the age of an object, of a natural phenomenon, or of a series of events. There are two basic types of dating methods, relative and absolute.
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dendrochronology

Method of scientific dating based on the analysis of tree rings. Because the width of annular rings varies with climatic conditions, laboratory analysis of timber core samples allows scientists to reconstruct the conditions that existed when a tree’s rings developed. By taking thousands of samples from different sites and different strata within a particular region, researchers can build a comprehensive historical sequence that becomes a part of the scientific record. Such master chronologies are used by archaeologists, climatologists, and others.


dendrochronology [¦den·drō·krə′näl·ə·jē]
(geology)
The science of measuring time intervals and dating events and environmental changes by reading and dating growth layers of trees as demarcated by the annual rings.


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This amazing level of preservation allows scientists to analyze single cells, growth rings, and tissue that once carried water and nutrients through the trees.
Now, he and his colleagues have counted growth rings in leg bones to determine the age distributions of four tyrannosaur species.
Biologist Gregory Erickson of Florida State University studied growth rings inside T.
 
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