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RE: Methods of absolute (direct and chronometric) age determination : Part 2 - Potassium-argon dating and other Radioactive dating Methods
can you post the source @mikka?
can you post the source @mikka?
Not sure about the EXACT source, but the story is very famous: the rock that got dated by this very method to 250 000 years. It came from the eruption in the eleventh century on Hawaii islands. As a matter of fact they knew exact year it happened.