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Age range of radiocarbon dating

C, is transported to the West of Scotland where it is transferred through the marine food web.

Dating techniques are procedures used by scientists to determine the age of an object or a series of events.

Absolute dating methods are carried out in a laboratory.

By measuring the amount of original and transformed atoms in an object, scientists can determine the age of that object.The two main types of dating methods are relative and absolute.Relative dating methods are used to determine only if one sample is older or younger than another.The most widely used and accepted form of absolute dating is radioactive decay dating. Radioactive decay refers to the process in which a radioactive form of an element is converted into a nonradioactive product at a regular rate.The nucleus of every radioactive element (such as radium and uranium) spontaneously disintegrates over time, transforming itself into the nucleus of an atom of a different element.Similarly, pollen grains released by seed-bearing plants became fossilized in rock layers.If a certain kind of pollen is found in an archaeological site, scientists can check when the plant that produced that pollen lived to determine the relative age of the site.In addition to the radiocarbon dating technique, scientists have developed other dating methods based on the transformation of one element into another.These include the uranium-thorium method, the potassium-argon method, and the rubidium-strontium method. Thermoluminescence (pronounced ther-moeloo-mi-NES-ence) dating is very useful for determining the age of pottery.As long as an organism is alive, the supply of carbon-14 is replenished.When the organism dies, the supply stops, and the carbon-14 contained in the organism begins to spontaneously decay into nitrogen-14.

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