radiometric dating

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radiometric dating

n.
A method for determining the age of an object based on the concentration of a particular radioactive isotope contained within it and the half-life of that isotope.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

radiometric dating

n
(Archaeology) any method of dating material based on the decay of its constituent radioactive atoms, such as potassium-argon dating or rubidium-strontium dating. Also called: radioactive dating
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ra′diomet′ric dat′ing


n.
any method of determining the age of earth materials or objects of organic origin based on measurement of either short-lived radioactive elements or the amount of a long-lived radioactive element plus its decay product.
[1965–70]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

ra·di·o·met·ric dating

(rā′dē-ō-mĕt′rĭk)
A method for determining the age of an object based on the concentration of a particular radioactive isotope contained within it. The amount of the isotope in the object is compared to the amount of the isotope's decay products. The object's approximate age can then be figured out using the known rate of decay of the isotope. Radiocarbon dating is one kind of radiometric dating, used for determining the age of organic remains that are less than 50,000 years old. For inorganic matter and for older materials, isotopes of other elements, such as potassium, uranium, and strontium, are used.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

radiometric dating

Dating rocks by the known rate of decay of radioactive elements that they contain.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
References in periodicals archive ?
FILE - The discovered cemetery CAIRO - 23 April 2019: The Egyptian-Italian archaeological mission operating in the Aga Khan cemetery in western Aswan found an ancient tomb carved in a rock dating back to the Greco-Roman era.
It's a geologist's dream, with layers of rock dating back almost two billion years and ancient lava fields that are some of the oldest exposed rock on earth.
Nickel has previously been found in rock dating to the Permian-Triassic boundary in China, Israel and countries throughout Europe, according to the study.
The range of Jeffreys's work covers blues, soul, reggae and rock dating back to his days at Syracuse University in the late 60s where he first met Lou Reed.
"Many of the mines in Ontario are associated with these large greenstone belts," says Pace, with some rock dating back 2.7 billion years.
The ancient city of Petra, a marvel hewn out of living rose red rock dating back thousands of years that serves as one of the symbols of Jordan, drew just over 359,000 foreign visitors last year, 12.7 percent down on 2005.