Relative dating of rock strata

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The ions produced are forced into a magnetic field where the different mass of the carbon isotopes causes a different deflection, allowing the quantity of each isotope to be measured.This method is claimed to be more accurate than the older and slower method of counting the number of radioactive decay emissions from a quite large sample.Surely 15,000 years of difference on a single block of soil is indeed a gross discrepancy!And how could the excessive disagreement between the labs be called insignificant, when it has been the basis for the reappraisal of the standard error associated with each and every date in existence?They found large variations in the radiocarbon 'dates' of objects of known age sent to 38 radiocarbon 'dating' laboratories around the world.Thirty-one of the labs gave results that the British group called unsatisfactory.

Only one out of every trillion carbon atoms is C14. The C14 created in the upper atmosphere reacts with oxygen to become carbon dioxide.

The nitrogen atom, which began with seven protons and seven neutrons, is left with only six protons and eight neutrons.

As the number of protons decides the chemical nature of an atom, the atom now behaves like a carbon atom.

PROBLEMS WITH RADIOCARBON DATING During the last 30 years, a new method of determining C14/C12 ratios has been developed.

It uses accelerator mass spectrometry to determine the amounts of C14 and C12 in a small sample which is vaporised in the test.

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