地ち質しつ活かつ動どう

noun

tectonic activity

Geological term referring to the movement and deformation of the Earth's crust, including earthquakes, volcanic activity, and mountain building.

• 日本にほん列れっ島とうは地ち質しつ活かつ動どうが活かっ発ぱつな地ち域いきです。

  The Japanese archipelago is a region of active tectonic activity.

• 地ち質しつ活かつ動どうによって新あたらしい山さん脈みゃくが形けい成せいされる。

  New mountain ranges are formed by tectonic activity.