Absolute and relative dating methods

Age of deposition should not be confused with the date of material enclosed in deposit.Cross dating involves comparing similar artifacts from similar sites that may be of similar age.

However, by itself a fossil has little meaning unless it is placed within some context.

According to the laws of superposition, a strategic layer that is higher has been deposited more recently.

The oldest strata are at the bottom of the sequence.

Before the advent of absolute dating methods in the twentieth century, nearly all dating was relative.

The main relative dating method is stratigraphy (pronounced stra-TI-gra-fee), which is the study of layers of rocks or the objects embedded within those layers.

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