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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. |
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The metrological advances led to opportunities and surprises, such as the non-monotonic dendrochronological calibration curve and the "bomb effect," that gave rise to new multidisciplinary areas of application, ranging from archaeology and anthropology to cosmic ray physics to oceanography to apportionment of anthropogenic pollutants to the reconstruction of environmental history. The results were included in the show, and ranged from infrared reflectography, xradiography, and dendrochronological evaluation. John Altarpiece, while known to be a replica of van der Weyden's painting in Berlin, must be dated much later, to about 1510, due to the dendrochronological and technical evidence. |
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