地ち層そう累るい重じゅうの法ほう則そく

expression, noun

law of superposition; principle of superposition

Geological principle that in undisturbed strata, older layers lie below younger ones.

• 地ち層そう累るい重じゅうの法ほう則そくは、地ち質しつ学がくの基き本ほん的てきな考かんがえ方かたの一ひとつです。

  The law of superposition is one of the fundamental concepts in geology.