Stratigraphy 

UNC archaeologist Theresa McReynolds explains how studying stratigraphy helps archaeologists determine the relative ages of artifacts.
This short video segment was created for a traveling exhibit called The Ancient Carolinians, which was created by the Morehead Planetarium and Science Center in collaboration with the Research Laboratories of Archaeology, both at UNC-Chapel Hill. Funding for these videos was provided by the Alcoa Foundation.