Meaning of STRATIFICATION in English

STRATIFICATION

Layering that occurs in most sedimentary rock s and in igneous rock s that are formed at the Earth's surface, such as from lava flows and volcanic deposits.

The layers (strata) may range from thin sheets that cover many square miles to thick lenslike bodies that are only a few feet wide.

Britannica English dictionary.      Английский словарь Британика.