Carbon Dating - Research Article from World of Earth Science

This encyclopedia article consists of approximately 3 pages of information about Carbon Dating.
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Carbon Dating

Carbon dating is a technique used to determine the approximate age of once-living materials. It is based on the decay rate of the radioactive carbon isotope 14C, a form of carbon taken in by all living organisms while they are alive.

Before the twentieth century, determining the age of ancient fossils or artifacts was considered the job of paleontologists or paleontologists, not nuclear physicists. By comparing the placement of objects with the age of the rock and silt layers in which they were found, scientists could usually make a general estimate of their age. However, many objects were found in caves, frozen in ice, or in other areas whose ages were not known; in these cases, it was clear that a method for dating the actual object was necessary.

In 1907, the American chemist Bertram Boltwood (1870–1927) proposed that rocks containing radioactive uranium could be dated by...

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This section contains 707 words
(approx. 3 pages at 300 words per page)
Buy the Carbon Dating Encyclopedia Article
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Carbon Dating from World of Earth Science. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.
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