Potassium dating

In these materials, the decay product is able to escape the liquid (molten) rock, but starts to accumulate when the rock solidifies (recrystallizes).

After the recrystallization of magma, more being the most abundant isotope.Since the rate at which this conversion occurs is known, it is possible to determine the elapsed time since the mineral formed by measuring the ratio of U, as the source of radiogenic heat.The core also likely contains radiogenic sources, although how much is uncertain.It has been proposed that significant core radioactivity (1–2 TW) may be caused by high levels of U, Th, and K.Potassium–argon dating, abbreviated K–Ar dating, is a radiometric dating method used in geochronology and archaeology.

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