As the lecture detailed, it is only accurate from about 62,000 years ago to 1,200 A. There is a sizable amount of time before and after that period that cannot be investigated using this method.Also, archaeologists cannot use their hands to touch the samples or smoke near them.
Since trees can have a lifespan of hundreds of years, its date of death might not even be relatively close to the date the archaeologists are looking for.
Thorough research and cautiousness can eliminate accidental contamination and avoidable mistakes.
They risk seriously altering the result of the test.
The “Old Wood Problem” is the last flaw of radiocarbon dating that will be elaborated upon here.
Standard calibration curves are now used for more accurate readings.
These curves indicate the changes in Carbon-14 throughout the years and modifies the end result of the tests to reflect that.
If an archaeologist wanted to date a dead tree to see when humans used it to build tools, their readings would be significantly thrown off.
This is because radiocarbon dating gives the date when the tree ceased its intake of Carbon-14—not when it was being used for weapons and other instruments!
The isotope decreased by a small fraction due to the combustion of fossil fuels, among other factors.
However, the quantity of Carbon-14 was nearly doubled in the ’50s and ’60s because of the atomic bomb testings in those decades.
Radiocarbon dating uses the naturally occurring isotope Carbon-14 to approximate the age of organic materials. Often, archaeologists use graves and plant remains to date sites.