How old is the earth based on radiometric age dating Adult chat and cam 2 cam web

Since it would only take less than 50,000 years to reach equilibrium from a world with no C-14 at the start, this always seemed like a good assumption.

That is until careful measurements revealed a significant disequalibrium. All the present C-14 would accumulate, at present rates of production and build up, in less than 30,000 years!

Thus, no one even considers using carbon dating for dates in this range.

Nowadays, scientists use radiometric dating of various sorts of rock – both earthly and extraterrestrial – to pinpoint Earth’s age.

He concluded that Earth was born 20 to 400 million years ago.

Today’s scientists believe that answer is incorrect, but Kelvin’s calculations were in being based on logical thinking and mathematical calculation.

It is only useful for once-living things which still contain carbon, like flesh or bone or wood.

Rocks and fossils, consisting only of inorganic minerals, cannot be dated by this scheme.

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Carbon normally occurs as Carbon-12, but radioactive Carbon-14 may sometimes be formed in the outer atmosphere as Nitrogen-14 undergoes cosmic ray bombardment.

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