17 K-Ar and Ar-Ar Dating - University of Arizona
https://www.geo.arizona.edu/~reiners/geos474-574/Kelley2002.pdf
WebAr dating (Dickin 1995; McDougall and Harrison 1999). The focus of this section will be aspects of argon transport and storage in the crust, which affect K-Ar and Ar-Ar dating including Ar-loss from minerals by diffusion and Ar-gain by minerals or “excess argon.” The K-Ar dating technique was one of the earliest isotope dating techniques,
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