noun
circum-Pacific orogenic belt
Geological term referring to the belt of mountain-building activity around the Pacific Ocean, also known as the Ring of Fire.
環太平洋造山帯は地震や火山活動が活発な地域です。
The circum-Pacific orogenic belt is a region with active earthquakes and volcanic activity.
環太平洋火山帯 (circum-Pacific volcanic belt) focuses on volcanic activity, while 環太平洋造山帯 emphasizes mountain-building processes.
Compound of 環太平洋 (circum-Pacific) + 造山帯 (orogenic belt). The term is a direct translation of the English geological term.