Argon argon radioactive dating method

30-Jun-2017 21:49

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Etna basalt, Sicily (May 1964) 0.7±0.01 Ma Medicine Lake Highlands obsidian, Glass Mountains, California ( in the 1800-1801 Hualalai flow, Hawaii, resided in fluid and gaseous inclusions in olivine, plagioclase, and pyroxene in ultramafic xenoliths in the basalt, and was sufficient to yield "ages" of 2.6 Ma to 2960 Ma.

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

This could even be the case when the K-Ar and Ar-Ar analyses yield "dates" compatible with other radioisotopic "dating" systems and/or with fossil "dating" based on evolutionary assumptions.

Critical to these dating methods is the assumption that there was. 40 Ar which cannot be attributed to atmospheric argon or in situ radioactive decay of.… continue reading »

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Argon–argon or 40 Ar/ 39 Ar dating is a radiometric dating method invented to supersede potassium-argon K/Ar dating in accuracy. The older method.… continue reading »

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