stratigraphy; succession of strata
Geological term referring to the study of rock layers and their sequence.
この地域の層序を調査する。
We investigate the stratigraphy of this area.
層序学は地質学の一分野だ。
Stratigraphy is a branch of geology.
stratigraphy
Compound of 層 (layer) and 序 (order), reflecting the concept of ordered rock layers.