Radiometric dating volcanic rock omar epps dating history
The slope of the line determines the date, and the closeness of fit is a measure of the statistical reliability of the resulting date.
The use of different dating methods on the same rock is an excellent way to check the accuracy of age results.
But, the decay elements need to be set, much like you would re-set a stop watch for a runner, to ensure an accurate measurement.
When minerals get subducted into the Earth and come back as volcanic magmas or ash, this essential re-sets the radiometric clock back to zero and therefore a reliable age date is possible.
In a related article on geologic ages (Ages), we presented a chart with the various geologic eras and their ages.
In a separate article (Radiometric dating), we sketched in some technical detail how these dates are calculated using radiometric dating techniques.