Dendrochronology dating techniques

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However, it is a circular process. The application of radiocarbon dating to groundwater analysis can offer a technique to predict the over-pumping of the aquifer before it becomes contaminated or overexploited. Dendrochronologists originally carried out cross-dating by visual inspection; more recently, they have harnessed computers to do the task, applying statistical techniques to assess the matching. A good dendrochronology study depends heavily on a lack of a repeated pattern. Tree rings provided truly known-age material needed to check the accuracy of the carbon dating method. By taking samples from different sites and different rock strata within a particular region, researchers can build a comprehensive historical sequence that becomes a part of the scientific record; for example, ancient timbers found in buildings can be dated to give an indication of when the source tree was alive and growing, setting an upper limit on the age of the wood. Carbon is a naturally occurring isotope of the element carbon.

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For instance, the bristlecone pine is exceptionally long-lived and slow growing, and has been used extensively for chronologies; still-living and dead specimens of this species provide tree-ring patterns going back thousands of years, in some regions more than 10, years.

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The Science of Soil Sterile vs. Email Print. There is one major drawback to dendrochronology and that is that we can only date the rings in the tree. Eventually, trees may tell a history even more ancient than our own. Portland, OR: The application of radiocarbon dating to groundwater analysis can offer a technique to predict the over-pumping of the aquifer before it becomes contaminated or overexploited.

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