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The three main methods used to date sedimentary rocks ...

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Correlation:<br />

• Correlation is the act of comparing and<br />

connecting stratigraphic data sets from outcrop<br />

or drill records on the basis of<br />

-lithology (lithostratigraphy)<br />

-fossil content (biostratigraphy = relative age)<br />

-chronostratigraphy (“absolute” age)<br />

-allostratigraphy (unconformity-bounded<br />

successions of strata)<br />

-genetic allostratigraphy = sequence stratigraphy

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