Rubidium strontium dating formula

Posted by / 07-Jan-2018 14:40

Rubidium strontium dating formula

Radiometric dating is a means of determining the "age" of a mineral specimen by determining the relative amounts present of certain radioactive elements.By "age" we mean the elapsed time from when the mineral specimen was formed.

From this partitioning, the mantle will become depleted in Rb relative to Sr.It was discovered that some chemical elements, notably uranium and thorium, are strongly radioactive.These elements occur naturally in nearly all rocks, and they account for the radioactivity you could observe with a Geiger counter.An atom with the same number of protons in the nucleus but a different number of neutrons is called an isotope.For example, uranium-238 is an isotope of uranium-235, because it has 3 more neutrons in the nucleus.

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