Helium diffusion dating

But YE scientists point out some anomalies in relation to C-14 and a very old earth.

For instance, measurable amounts of C-14 have been found in fossil material, such as coal (traditionally Carboniferous period c300 mya).

The time required for half the original number of parent atoms to decay is called the half life.

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A full discussion of the topic must therefore include the current scientific challenge to the OE concept.This implies the earth is at least 20 million years old.Astronomical cycles can also be used to measure relative age.These estimates give 4.4-4.5 billion years for moon rock, and 4.54 billion years for iron metreorites.These techniques utilize the physical parameters of the earth, such as ice cores, annual lake sediments, and astronomical cycles.

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