Rubidium strontium dating

19-Jul-2017 06:32

The above equation tells us the absolute amount of Strontium-87 in the rock sample.

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From this partitioning, the mantle will become depleted in Rb relative to Sr.It has the same number of protons, otherwise it wouldn't be uranium.The number of protons in the nucleus of an atom is called its atomic number.The radioactive decay process can be described simply as the transformation of an unstable radioactive atom (called the parent) to a new atom (called the daughter) that may differ in atomic number, atomic mass, or both.

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The transformation occurs either by loss of particles from, or addition of particles to, the parent nucleus.An atom with the same number of protons in the nucleus but a different number of neutrons is called an isotope.