What is potassium argon dating

30-Aug-2016 22:10

But micas, plagioclase, hornblende, clays and other minerals can yield good data, as can whole-rock analyses.Young rocks have low levels of Ar, so as much as several kilograms may be needed.Developed in the 1950s, it was important in develping plate tectonics and in calibrating the geologic time scale.

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Given careful work in the field and in the lab, these assumptions can be met.

The rock sample to be dated must be chosen very carefully.

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