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HOW USEFUL IS DENDROCHRONOLOGY TO ARCHAEOLOGY

HOW USEFUL IS DENDROCHRONOLOGY TO ARCHAEOLOGY? Dendrochronology is a technique that has been in use for most of the twentieth century. Essentially the process revolves around tree rings. In a moderate environment, trees grow by one ring each year and thus, to an extent, by examining these ring sequences, it is possible to understand the conditions in which the tree grew, year by year. The resultant pattern is then comparable with patterns from other trees found in similar areas, growing under similar circumstances; types of ring can then be assigned to specific years. As well as their importance for studying climatic and environmental development, these tree ring patterns, ( the culmination of which are called chronologies ), are particularly useful to archaeologists. By tracing the patterns from living trees back through time, it is possible to compare samples of wood that have been recovered from ancient structures with our established chronologies, and match the sequence of the rings, thus revealing the age of the sample. This is known as cross dating. In the 20’s and 30’s the archaeologist, Douglass used these techniques effectively, and was one of the first to do so. At Pueblo Bonito, in New Mexico he established, for the first time, absolute dates for forty-five different monuments. He also used the technique to study the effects of a significant drought that occurred from1276 – 1299 ( as well as several others ). He was also able to look at the implications of the use of dead wood, and the re-using of other timbers. Over the last twenty years more than six thousand years of chronologies, covering as far back as 7500 B.C. have been developed for the Balkans, the Aegean and the Near East. Ideally there will eventually be an unbroken database of chronologies from present to Neolithic, therefore enabling any finds from these areas to be dated in this manner, easily and also accurately. Clearly, the more patterns t...

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