Ar ar dating technique
Rutherford backscatter (RBS) measurements of argon implantation experiments into albite confirm the veracity of these estimates.
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If one of these protons is hit by a beta particle, it can be converted into a neutron.
With 18 protons and 22 neutrons, the atom has become Argon-40 (Ar-40), an inert gas.
Ar total fusion technique on 19 terrestrial samples whose conventional K-Ar ages range from 3.4 my to nearly 1700 my.
Sample materials included biotite, muscovite, sanidine, adularia, plagioclase, hornblende, actinolite, alunite, dacite, and basalt.
Geologists have used this method to date rocks as much as 4 billion years old.
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