Radiometric dating rock strata pictures of ghana dating scammers

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Stratigraphy is the science of understanding the strata, or layers, that form the sedimentary record.Strata are differentiated from each other by their different colors or compositions and are exposed in cliffs, quarries, and river banks.These rocks normally form relatively horizontal, parallel layers, with younger layers forming on top.This is difficult for some time periods, however, because of the barriers involved in matching rocks of the same age across continents.

Paleontology seeks to map out how life evolved across geologic time.A substantial hurdle is the difficulty of working out fossil ages.

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