How are carbon isotopes used in carbon dating

04-Jun-2017 11:35

A rock sample from Nigeria was dated at 95 million years by the potassium-argon method, 750 million years by the uranium-helium method, and less than 30 million years by the fission-track method.

If the clock is not set to zero when a deposit forms, then there can be no starting point from which to calculate the age of a deposit.

However, conditions may have been different in the past and could have influenced the rate of decay or formation of radioactive elements.We could put forward the following counter arguments to the constancy of these assumptions: a) The constancy of cosmic ray bombardment might be questioned.The current high rate of entry might be a consequence of a disturbed post-Flood environment that altered the .Many examples from literature show that the zero-reset assumption is not always valid.Volcanic ejecta of Mount Rangitoto (Auckland, New Zealand) was found to have a potassium-40 age of 485,000 years, yet trees buried within the volcanic material were dated with the carbon-14 method to be less than 300 years old.

However, conditions may have been different in the past and could have influenced the rate of decay or formation of radioactive elements.

We could put forward the following counter arguments to the constancy of these assumptions: a) The constancy of cosmic ray bombardment might be questioned.

The current high rate of entry might be a consequence of a disturbed post-Flood environment that altered the .

Many examples from literature show that the zero-reset assumption is not always valid.

Volcanic ejecta of Mount Rangitoto (Auckland, New Zealand) was found to have a potassium-40 age of 485,000 years, yet trees buried within the volcanic material were dated with the carbon-14 method to be less than 300 years old.

A further example from a lava flow off the coast of Hawaii shows similar discrepancies.