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    Potassium argon kar dating of volcanic sediments is dating site adelaide

    Metamorphic rocks are not always easy to date using radio-isotopes.

    This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks. Some do not change with time and form stable isotopes (i.e.

    Potassium–argon dating, abbreviated K–Ar dating, is a radiometric dating method used in geochronology and archaeology.

    It is based on measurement of the product of the radioactive decay of an isotope of potassium (K) into argon (Ar).

    Radioactive decay is a natural process and comes from the atomic nucleus becoming unstable and releasing bits and pieces.

    These are released as radioactive particles (there are many types).

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