Reletive dating

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Biostratigraphy: One of the first and most basic scientific dating methods is also one of the easiest to understand.

Generally speaking, the more complex a poem or piece of pottery is, the more advanced it is and the later it falls in the chronology.

Researchers can measure the amount of these trapped electrons to establish an age.

But to use any trapped charge method, experts first need to calculate the rate at which the electrons were trapped.

Paleomagnetism is often used as a rough check of results from another dating method.

Tephrochronology: Within hours or days of a volcanic eruption, tephra — fragments of rock and other material hurled into the atmosphere by the event — is deposited in a single layer with a unique geochemical fingerprint.

Paleontologists still commonly use biostratigraphy to date fossils, often in combination with paleomagnetism and tephrochronology.

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