Can radioactive dating used metamorphic rocks

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In addition, because sediment deposition is not continuous and much rock material has been removed by from many localities has to be integrated before a complete picture of the evolution of life on Earth can be assembled.

Without absolute ages, investigators could only determine which fossil organisms lived at the same time and the relative order of their appearance in the correlated sedimentary rock record.It should be emphasized that linking sites together is essential if the nature of an ancient society is to be understood, as the information at a single location may be relatively insignificant by itself.Similarly, in geologic studies, vast quantities of information from widely spaced outcrops have to be integrated.Unlike ages derived from fossils, which occur only in sedimentary rocks, absolute ages are obtained from minerals that grow as liquid rock bodies cool at or below the surface.When rocks are subjected to high temperatures and pressures in collide, certain datable minerals grow and even regrow to record the timing of such geologic events.

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