Absolute dating is the process of determining a specific date for an
archaeological or
palaeontological site or artifact. Some archaeologists prefer the terms chronometric or calendar dating, as use of the word "absolute" implies a certainty and precision that is rarely possible in archaeology. Absolute dating is usually based on the physical or chemical properties of the materials of artifacts, buildings, or other items that have been modified by humans. Absolute dates do not necessarily tell us when a particular cultural event happened, but when taken as part of the overall
archaeological record they are invaluable in constructing a more specific sequence of events.
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The fixing of a geological structure or event in time, as by counting tree rings.
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