Ways dating artefacts
These layers, called strata, form a record of past events that archaeologists analyze and interpret.
The materials deposited first are the oldest and are always found at the bottom of a given stratigraphic section.
The most recently deposited materials are the youngest and are always at the top. It always applies except when some type of disturbance has occurred.
Strata in archaeological sites provide archaeologists with temporal and spatial information.
All of the artifacts in a given stratum will be of approximately the same age, while those in strata above or below will be younger or older respectively.