C must be younger than 50,000 to 100,000 years, assuming that adequate precautions have been taken to eliminate contamination.Carbon dating, like other radiometric dating methods, requires certain assumptions that cannot be scientifically proved.These include the starting conditions, the constancy of the rate of decay, and that no material has left or entered the sample.

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Carbon dating years video

Claims have been made of the method being calibrated back to 10,000 years using dendrochronology, C ratios the same as the atmosphere.

For example, it is well known that carbon dating cannot be used on many types of marine life due to reservoirs of "old" carbon held in sedimentary rocks.

Carbon dating, or carbon-14 dating, is a method for comparing the ages of organic materials such as bones or artifacts made from anything that once lived.

Unlike many other radiometric dating methods, carbon dating has been calibrated for historical periods and within that range can give reliable results.

That is, samples with dates known from historical records can be used to check the accuracy of the method.

Despite this, however, caution is still necessary in accepting dates derived from carbon dating.

Scientists at Brookhaven National Laboratory and the Physikalish-Technische-Bundesandstalt in Germany have reported "unexplained periodic fluctuations in the [nuclear] decay rates of Si-32 and Ra-226...

An animal that ingested plants with relatively low C-14 proportions would be dated older than their true age." Dating laboratories do not make any allowance for the change in atmospheric levels that would have occurred as a result of Noah's Flood.

This means that radio-carbon dates cannot be used to prove that the Flood did not occur, because it assumes that it did not occur.

This problem is especially severe in shellfish or anything that eats shellfish; it is not unusual for freshly-killed seals to be dated as several thousand years old.

...various plants have differing abilities to exclude significant proportions of the C-14 in their intake. The varying rates at which C-14 is excluded in plants also means that the apparent age of a living animal may be affected by an animal's diet.