radiometric dating


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Related to radiometric dating: Carbon 14 dating

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.

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

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]

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.

radiometric dating

Dating rocks by the known rate of decay of radioactive elements that they contain.
References in periodicals archive ?
'Based on the radiometric dating of various archaeological materials, this site is the earliest long-term dwelling in a high mountain region known to us anywhere in the world,' said the first author of the study, Dr Gotz Ossendorf from the Department of Prehistoric Archaeology.
Based on the radiometric dating of various archaeological materials, this site is the earliest long-term dwelling in a high mountain region known to us anywhere in the world, said the first author of the study, Dr Gtz Ossendorf from the Department of Prehistoric Archaeology.
The Ar-Ar age of the ash was 10,000 [+ or -] 300 years, an excellent confirmation from a completely different radiometric dating method.
Using radiometric dating, the scientists discovered that the nightshade family is at least 12 million years older than originally thought.
To reach to their findings, the researchers used radiometric dating on the bone to determine its date.
(3) These problems come for the most part from the different methodologies used by field archaeologists and art historians, the nature of the materials studied (pottery, metal finds, burials, stratified settlement refuse) and the reliance of radiometric dating methods on one hand, and standing monuments, stone and bronze sculpture, stuccos, paintings, inscriptions and stylistic comparisons on the other.
Paleontologists have for years painstakingly collected fossils from these sites, and worked to precisely determine their ages using radiometric dating. The new study builds on this growing body of knowledge.
To anchor this sequence to a specific time frame, scientists used radiometric dating to measure the absolute ages of samples returned by the Apollo astronauts four decades ago.
Mikhail Marov of the Vernadsky Institute of Geochemistry and Analytical Chemistry said scientists had determined the meteorite's age by observing the amount of radioactive isotopes and their decay byproducts, a technique called radiometric dating.
"It could prove especially useful when there is no direct communication with Earth that allows for estimation of its position using radiometric dating or images provided by orbiters," noted the researcher.
Radiometric dating of a granodiorite at the Cuttaburra A prospect indicates that this mineralised system may be Middle Silurian in age and thus indicating that the host rocks are older than those hosting the Cobar-type deposits.
Students were asked questions about superposition and radiometric dating.