World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization. In one
The law of superposition is based on the common sense argument that the bottom layer had to laid down first. In an undisturbed site, artifacts found together in the same strata
at Harpers Ferry National Historic Park. In its plainest form, it states that in undeformed stratigraphic sequences, the oldest strata will be at the bottom of the sequence. 6.