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potasio-argón
A radiometric dating method based on the fact that potassium-40 in volcanic rock decays into argon-40 and calcium-40 at a known rate. The half-life of potassium-40 is approximately 1. 3 billion years. Chronometric dates are determined by measuring the amount of argon-40 in a sample. Similarly, argon-40 and argon-39 ratios can be used for chronometric dating.
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- Part of Speech: noun
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- Industry/Domain: Anthropology
- Category: Physical anthropology
- Company: Palomar College
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