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The isotopes the KAr system relies on are Potassium (K) and Argon (Ar).

Potassium, an alkali metal, the Earth's eighth most abundant element is common in many rocks and rock-forming minerals.

Susie Welch, recently retired outreach coordinator at the New Mexico Bureau of Geology, was recognized by Governor Susana Martinez for outstanding accomplishments and invaluable contributions to the state of New Mexico.

Carbon has unique properties that are essential for life on Earth.

Potassium can be mobilized into or out of a rock or mineral through alteration processes.

Due to the relatively heavy atomic weight of potassium, insignificant fractionation of the different potassium isotopes occurs.

Libby received the Nobel Prize in Chemistry for his work in 1960.

The radiocarbon dating method is based on the fact that radiocarbon is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen.




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