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dendrochronology |
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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. ..... Click the link for more information. . dendrochronologyMethod 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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Temperature data in Mann's graph is recorded in two ways -- using tree rings and by thermometer readings. Method of scientific dating based on the analysis of tree rings. US scientists examined ice cores, tree rings and lake sediments at 23 sites across the region to form a decade-by-decade picture of temperatures. |
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