構こう造ぞう線せん

noun

tectonic line

A geological term for a major linear feature in the Earth's crust, such as a fault or boundary between tectonic plates. Used in earth science contexts.

• 中ちゅう央おう構こう造ぞう線せんは日本にほん列れっ島とうを縦じゅう断だんする大だい断だん層そうです。

  The Median Tectonic Line is a major fault that runs lengthwise through the Japanese archipelago.