Carbon dating method and its uses

Lesson Summary Radiocarbon dating is a method used to date materials that once exchanged carbon dioxide with the atmosphere; in other words, things that were living. The different isotopes of carbon do not differ appreciably in their chemical properties. Examples of use include analyzing charcoal from prehistoric caves, ancient linen and wood, and mummified remains. One of the frequent uses of the technique is to date organic remains from archaeological sites. National Council on Radiation Protection and Measurements.

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Notice that the nitrogen atom is recreated and goes back into the cycle.

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What is Carbon Dating? - Definition & Overview

The initial 14 C level for the calculation can either be estimated, or else directly compared with known year-by-year data from tree-ring data dendrochronology up to 10, years ago using overlapping data from live and dead trees in a given areaor else from cave deposits speleothemsback to about 45, years before the present. To determine this, a blank sample of old, or dead, carbon is measured, and a sample of known activity is measured. Carbon is produced in the upper layers of the troposphere and the stratosphere by thermal neutrons absorbed by nitrogen atoms. The application of radiocarbon dating to groundwater analysis can offer a technique to predict the over-pumping of the aquifer before it becomes contaminated or overexploited. The Wikibook Historical Geology has a page on the topic of:

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carbon dating method and its uses
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