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What is the difference between radiocarbon dating and dendrochronology

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Dendrochronology is the formal term for tree-ring dating, the science that uses the growth rings of trees as a detailed record of climatic change in a region, as well as a way to approximate the date of construction for wooden objects of many types.

By comparing living trees with old lumber and finding overlapping ring patterns, scientists have established chronological records for some species that go back as far as 9,000 years.

The method was developed by Willard Libby in the late 1940s and soon became a standard tool for archaeologists.

This means that although they are very similar chemically, they have different masses.Radiocarbon dates which have been corrected--or rather, calibrated--by comparison to dendrochronological records are designated by abbreviations such as cal BP, or calibrated years before the present.See the cal BP discussion for additional information about radiocarbon calibration.Professor Willard Libby produced the first radiocarbon dates in 1949 and was later awarded the Nobel Prize for his efforts.Radiocarbon dating works by comparing the three different isotopes of carbon.Tree-ring dating works because a tree grows larger--not just height but gains girth--in measurable rings each year in its lifetime.