Adverb
stratigraphically (not comparable)
In a stratigraphic manner; with respect to stratigraphy
Here, they combined Wright's interest in ceramic typology in the best Albright tradition with Kenyon's methods of excavation, which allowed the isolation of clear, stratigraphically determined pottery assemblages". Source: Internet
Glacial sediments are difficult to date, and the closest dated bed to the Portaskaig group is 8 km stratigraphically above the beds of interest. Source: Internet