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    Dating method in geology

    Read the pages listed below, which are available online through Library Reserves.

    We can expect these differences to be quite pronounced, because rubidium and strontium have different chemical affinities: as we have noted, rubidium substitutes for potassium, and strontium for calcium.For purposes of illustration, consider the rubidium-strontium decay system.In this system, the radioactive parent rubidium-87 ( ..the critical assumptions stated above.In uranium–lead dating, minerals virtually free of initial lead can be isolated and corrections made for the trivial amounts present.In whole rock isochron methods that make use of the rubidium–strontium or samarium–neodymium decay schemes (see below), a series of rocks or minerals are chosen that can be assumed to have the same age...

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