noun
the branch of geology concerned with the order and relative position of strata and their relationship to the geological time scale
-
The study of stratigraphy helps geologists understand the layers of rock and their relative ages.
-
When we were hiking, we could see the different layers of rock thanks to stratigraphy.
-
I'm really into digging into the stratigraphy of different areas to learn more about their history.
-
In a way, understanding someone's past is like studying the stratigraphy of their life.