determining the age of sediment layers in relation to each other.
age of an artifact or layer in comparison with items that are younger or older.
The relative age of a geologic phenomenon is its age compared with other geologic phenomena, particularly the stratigraphic record of rock layers. Compare with absolute age.
The age of one thing, such as a geologic unit, in comparison to another. Relative ages are usually determined by crosscutting relationships and the number of impact craters on planetary surfaces.
The age of one geologic feature with respect to another.
The age of a rock or formation given relative to other rocks or formation, usually defined as a zone fossil name. See also Absolute age.
