Seriation was developed in the USA to place in order finds from strata or other kinds of assemblages such as potsherds collected from the surface of sites.
Prehistorians sometimes overestimate the accuracy and detail of frameworks based on historical evidence; in practice, early written sources may provide little more information than a scatter of radiocarbon dates.
However, relative methods are , which is that if there are layers of deposits, those laid down first will be on the bottom and those laid down last will be on the top. However, geological strata are not always found to be in a neat chronological order.
Wind and water erode strata and some areas are uplifted or even tilted.
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.
These processes result in All of these processes confuse the stratigraphic record.