- —dendrochronological /den'droh kron'l oj"i keuhl/, adj. —dendrochronologically, adv. —dendrochronologist, n./den'droh kreuh nol"euh jee/, n.the science dealing with the study of the annual rings of trees in determining the dates and chronological order of past events.[1925-30; DENDRO- + CHRONOLOGY]
* * *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.
* * *also called tree-ring datingthe scientific discipline concerned with dating and interpreting past events, particularly paleoclimates and climatic trends, based on the analysis of tree rings. Samples are obtained by means of an increment borer, a simple metal tube of small diameter that can be driven into a tree to get a core extending from bark to centre. This core is split in the laboratory, the rings are counted and measured, and the sequence of rings is correlated with sequences from other cores.Dendrochronology is based on the fact that many species of trees produce growth rings during annual growing seasons. The width of the ring (i.e., the amount of growth) for each year is determined by various internal and external factors, but it tends to vary mainly in proportion to either the amount of available precipitation or the prevailing temperatures. The ring measurements taken from trees with overlapping ages can extend knowledge of climates back thousands of years. The bristlecone pines (bristlecone pine) of California have proven to be particularly suitable for such chronologies, since some individual trees are more than 4,000 years old.
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dendrochronology — dating by tree rings, 1928; see DENDRO (Cf. dendro ) + CHRONOLOGY (Cf. chronology) … Etymology dictionary
dendrochronology — ☆ dendrochronology [den′drōkrə näl′ə jē, den′drəkrə näl′ə jē ] n. the science of dating past events or climatic changes by a comparative study of growth rings in tree trunks dendrochronological [den′drōkrän΄ə läj′i kəl, den′drəkrän΄ə läj′i kəl]… … English World dictionary
Dendrochronology — Drill for dendrochronology sampling and growth ring counting Dendrochronology or tree ring dating is the scientific method of dating based on the analysis of patterns of tree rings. Dendrochronology can date the time at which tree rings were… … Wikipedia
dendrochronology — dendrochronologija statusas T sritis ekologija ir aplinkotyra apibrėžtis Metodas, naudojamas medžių amžiui ar augimo laikui nustatyti pagal rieves skersiniame kelmo pjūvyje. atitikmenys: angl. dendrochronology vok. Dendrochronologie, f rus.… … Ekologijos terminų aiškinamasis žodynas
dendrochronology — noun Date: circa 1928 the science of dating events and variations in environment in former periods by comparative study of growth rings in trees and aged wood • dendrochronological adjective • dendrochronologically adverb • dendrochronologist… … New Collegiate Dictionary
dendrochronology — noun The science that uses the spacing between the annual growth rings of trees to date their exact year of formation. See Also: dendroarchaeology, dendrochemistry … Wiktionary
dendrochronology — observation of a core or cross section of a tree trunk shows a pattern of essentially concentric rings, each representing a year of growth. The number of rings can therefore be used to date the tree. Further, wider rings (higher rate of growth) … Geography glossary
dendrochronology — study of tree rings Sciences and Studies … Phrontistery dictionary
dendrochronology — noun a technique of dating based on the investigation of annual growth rings in tree trunks. Derivatives dendrochronological adjective dendrochronologist noun … English new terms dictionary
dendrochronology — den·dro·chronology … English syllables