Relative age dating superposition 121 dating page single

Relative age dating superposition

Relative age dating also means paying attention to crosscutting relationships.

Say for example that a volcanic dike, or a fault, cuts across several sedimentary layers, or maybe through another volcanic rock type.

Like the other kind of dating, geologic dating isn’t always simple.

The half-life of carbon 14, for example, is 5,730 years.Pretty obvious that the dike came after the rocks it cuts through, right?With absolute age dating, you get a real age in actual years.Relative dating is used to arrange geological events, and the rocks they leave behind, in a sequence.The method of reading the order is called stratigraphy (layers of rock are called strata).

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Throughout the history of life, different organisms have appeared, flourished and become extinct.

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    The output of the uses Julian dates for all date/time calculations.

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