<|im_start|>user
How do archaeologist use stratigraphy?<|im_end|>
<|im_start|>assistant
Stratigraphy is very important for archaeologists and is used to interpret time and space within a site. In general, the soil horizons near the top are the most recent and those lower down are older. Stratigraphy can help archaeologist determine how old a site is as well as different events that might have taken place at the site.<|im_end|>
