How does carbon dating help us calculate the earth age


The earth’s atmosphere is about 100 miles thick. The atmosphere has very distinctive layers to it. The earth’s atmosphere contains: 78% nitrogen, 21% oxygen, .06% carbon dioxide, and .0000765% radioactive carbon. This radioactive carbon 14 is different from regular carbon. It is produced by radiation striking the atmosphere. In essence, sunlight strikes the atmosphere, slaps the nitrogen around, and turns it into carbon 14. So it all starts by the sunlight striking the atmosphere. About 21 pounds of carbon 14 is produced every year; and that is spread out all over the world.

Because carbon is expected to be thoroughly mixed throughout the biosphere, atmosphere, and oceans, living organisms (which continually “take in” carbon throughout their lifetimes) are expected to have the same 14 C/C ratio as the environment, or about one 14 C atom per trillion carbon atoms. Once they die, however, organisms no longer take in new carbon, and the amount of 14 C in their bodies begins to decrease.


How does carbon dating help us calculate the earth age

How does carbon dating help us calculate the earth age



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