火山区 meaning in English

volcanic province
volcanic region
volcanic territory

The concept of this self-sealing process broadens the likelihood of cap rocks with low permeability occurring in volcanic areas .
自封密过程这一概念使得火山区也可能出现渗透性能很低的盖层。
The textual research on toponym of the wudalianchi volcanoes
五大连池火山区地名考
This is one of the most outstanding volcanic regions in the world , with a high density of active volcanoes , a variety of types , and a wide range of related features
勘察加火山是世界上最著名的火山区之一，它拥有高密度的活火山，而且类型和特征各不相同。
A special feature of the north island is the central volcanic region with three still active volcanic peeks and internal activity featuring hot springs , geysers , and boiling mud pools
北岛富有特色的地形风貌莫过于有着三座活火山的中部火山区，以及以热泉、间歇泉和沸腾的泥浆为特征的地热活动。