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Which radioactive isotope would you use to date a 2-million-year-old bed of volcanic ash that contains the footprints of human ancestor

1. Carbon - 14 dating
2. Uranium 238 - lead -206 dating
3. Potassium - argon dating

Respuesta :

firetiger2815

Answer:

3. Potassium - argon dating

Explanation:

The potassium-argon dating method has been used to measure a wide variety of ages. The potassium-argon age of some meteorites is as old as 4,500,000,000 years, and volcanic rocks as young as 20,000 years old have been measured by this method.

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