火か山ざん前ぜん線せん

noun

volcanic front

Rare geological term referring to the boundary or zone where volcanic activity is concentrated, often in the context of subduction zones. The cross-reference 火山フロント is a more common synonym.

See also: 火山フロント

• 東とう北ほく日本にほん弧この火か山ざん前ぜん線せんは、太たい平へい洋ようプレートの沈しずみ込こみに沿そって分ぶん布ぷしている。

  The volcanic front of the Northeast Japan Arc is distributed along the subduction of the Pacific Plate.