absolute dating - determining a date or a range of dates in which a rock, a layer of rock, or an archeological sample formed, strata - a layer of rock or sediment characterized by certain properties or attributes that distinguish it from neighboring layers, sedimentary rock - a type of rock that is created by the accumulation of material in layers over time, relative dating - determining the relative order of past events without necessarily determining their absolute age,

Relative vs Absolute Age

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