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geochronology |
Also found in: Wikipedia, Hutchinson | 0.02 sec. |
geochronologyDating and interpretation of geologic events in the history of the Earth. The classical technique of geochronology was stratigraphy, including faunal succession. Since the mid 20th century, radiometric dating has provided absolute age data to supplement the relative dates obtained from the fossil record. Radiometric dating is based on the principle that radioactive isotopes in geologic material decay at constant, known rates to daughter isotopes. See also carbon-14 dating. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The absolute age derives from the
inversion of first order nuclear decay relation, using 15. Definitions
of CSA typically involve several criteria: age of the child (most set
the maximum age at some point between 13 and 18); age of partner
(sometimes based on an absolute age, other times on the age difference
between child and partner; furthermore, sometimes this age differential
varies based on age of child); relationship between child and partner
(e. No absolute age was calculated for the site because it contains no
volcanic ash, the material usually analyzed in such dating. |
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