How Far Back Can Carbon Dating

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Carbon dating, rate of decay, how far can we go? - Ars . . .
Question: How Far Back Can You Carbon Date - SeniorCare2Share
How far back can carbon dating be used? - Answers
Radiocarbon dating - Wikipedia
Carbon Dating - AllAboutArchaeology .org
How far back can you go before carbon dating becomes . . .
How reliable is radiocarbon dating? - Science Meets Religion
Does carbon dating prove the earth is millions of years . . .
How Accurate is Carbon Dating? Labmate Online
Is Carbon Dating Accurate? - AllAboutArchaeology .org
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The technique for carbon dating is being refined to the point it is believed that reasonable accuracy may be achieved back to 100,000 years ago . Carbon dating works, btw, by comparing the ratio of . . .
How far back into Earth's history can you date carbon -14? Take the quiz . The carbon -14 method was developed by the American physicist Willard F . Libby about 1946 . It has proved to be a versatile technique of dating fossils and archaeological specimens from 500 to 50,000 years old .
By using carbon 14 dating , scientists can date plants and animals that lived as long as 35,000 years ago . When was opium discovered? Carbon -14 dating has dated opium as far back as 4200 B .C .
Radiocarbon dating (also referred to as carbon dating or carbon -14 dating ) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon . The method was developed in the late 1940s at the University of Chicago by Willard Libby .
So, if we find the remains of a dead creature whose C-12 to C-14 ratio is half of what it's supposed to be (that is, one C-14 atom for every two trillion C-12 atoms instead of one in every trillion) we can assume the creature has been dead for about 5,730 years (since half of the radiocarbon is missing, it takes about 5,730 years for half of it to decay back into nitrogen) .
Wikipedia has a pretty thorough and extensive discussion of radiocarbon dating , which I'd encourage you to look through along with our FAQ on radiometric dating (a lot of which is focused on C 14 ) . As for the effective range of C 14 , it's ~50,000 years, though it can sometimes be pushed back a little farther (the half life of C 14 is 5730 . . .
Because of this relatively short half-life, radiocarbon is useful for dating items of a relatively recent vintage, as far back as roughly 50,000 years before the present epoch . Radiocarbon dating cannot be used for older specimens, because so little carbon -14 remains in samples that it cannot be reliably measured .
A few examples of wild dates by radiometric dating : Shells from living snails were carbon dated as being 27,000 years old . 3; Living mollusk shells were dated up to 2,300 years old . 4; A freshly killed seal was carbon dated as having died 1,300 years ago . 5 "One part of the Vollosovitch mammoth carbon dated at 29,500 years and another part at 44,000 ." 6
The half-life of carbon is 5,730 years, which means that it will take this amount of time for it to reduce from 100g of carbon to 50g - exactly half its original amount . Similarly, it will take another 5,730 years for the amount of carbon to drop to 25g, and so on and so forth .
The result is that carbon dating is accurate for only a few thousand years . Anything beyond that is questionable . This fact is born out in how carbon dating results are used by scientists in the scientific literature . Many scientists will use carbon dating test results to back up their position if the results agree with their preconceived theories .
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How Far Back Can Carbon Dating

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