what is absolute rock dating

Methods like radiometric dating are employed to find this age. Become an OU student. All radioactive substances are found in igneous rocks except Carbon 14 which is only used to date fossils less than 50, years old. As we travel to more and more places, correlating stratigraphic sequences of biological succession as we go, we construct a grand series of fossils, oldest at the bottom and youngest at the top. Because these features are the ones doing the cutting, we know that they are younger than the rocks that they cut into. Igneous or metamorphic rocks. Share this free course.

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