K-Ar dating
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K-Ar dating, also known as Potassium-Argon Dating, is a form of radiometric dating that measures the ratio of potassium-40 and argon-40 and radiogenic calcium-40 to potassium-40 in a mineral or rock to date the sample's age, since potassium-40 decays into both argon-40 and calcium-40 in minerals and rocks.[1]
Affected by Volcanism
Creationists sent dacite from the 1986 Mount St. Helens eruption to an independent scientific laboratory for testing resulting in K-Ar dates of 2.8 +/- 0.6 Mya (Million years ago).[2]
TalkOrigins' Response
TalkOrigins protested the results, claiming that the sample wasn't properly prepared by removing xenocrysts, even though Steve Austin did remove them.
References
- ↑ Setia, V.; Das, D.; Augustyn, A.; et. al. (2020, March 4). "Potassium-Argon Dating." Encyclopædia Britannica.
- ↑ Austin, S.A. (1996). "Excess Argon within Mineral Concentrates from the New Dacite Lava Dome at Mount St. Helens Volcano." CEN Tech. J. 10(3). ISSN 1036.
