vkcom privedatings2016 comlogin - About carbon dating

In order for carbon dating to be accurate, we must know what the ratio of carbon-12 to carbon-14 was in the environment in which our specimen lived during its lifetime.

during the industrial revolution more carbon-12 was being produced offsetting the ratio a bit).

The possibility of contamination of very ancient samples, is unavoidable.

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Hence, the ages are specified as 3400 BP (3400 years BP). The flaw in this method is that it assumes that the carbon-14/carbon-12 ratio has been the same till 1950, which is not the case in reality.

However, this problem is taken care of, by calibration curves, which account for the change in the ratio.

They are then able to calibrate the carbon dating method to produce fairly accurate results.

Carbon dating is thus accurate within the timeframe set by other archaeological dating techniques.

One reason is the fact that it has a radioactive isotope and second reason is that life is based on carbon compounds.

This made age determination of carbonaceous life possible.

This dating method is based on comparison of ratios of two carbon isotopes, which are C-12 and C-14. Isotopes are elements with the same atomic number, but different atomic mass numbers. By comparing the amount of radioactive carbon present now, with the amount at the beginning, an age estimate can be made, based on laws of radioactive decay.

Why was carbon chosen for the dating method, out of all the radioactive elements?

However, in reality the ratio varies with time and place.

C-14 is created in the upper layers of the atmosphere, by the bombardment of Nitrogen with cosmic rays.

Still, this changing ratio of carbon isotopes, does make a minuscule dent in the calculation accuracy.

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