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17-Nov-2020 14:45

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Radiocarbon dating may only be used on organic materials.

Typically (6): The above list is not exhaustive; most organic material is suitable so long as it is of sufficient age and has not mineralised - dinosaur bones are out as they no longer have any carbon left.

Stone and metal cannot be dated but pottery may be dated through surviving residue such as food particles or paint that uses organic material (8).

As a test, the team took samples of acacia wood from two Egyptian Pharaohs and dated them; the results came back to within what was then a reasonable range: 2800BC /- 250 years whereas the earlier independent dates (largely the dendrochronology records) were 2625 /- 75 years (3), (5).

This does not mean that we have a precise year of 3780BC, it means we then need to calibrate through other methods that will show us how atmospheric concentrations of the C isotope has changed - most typically through the dendrochronology records (tree ring data) (10).

Very old trees such as North American Bristlecone Pine are ideal for constructing long and accurate records of the state of the atmosphere.

Archaeologists had used Relative Dating methods to calculate their reigns.

Though their initial calculations were slightly incorrect thanks to the contaminants of extensive nuclear testing of the age, scientists soon discovered the error and developed methods that were more accurate, including a date of calibration to 1950.

Typically, a Master's Degree in chemistry is required because of the extensive lab work.