Under the tectonic backgrounds of island arc belt, fore - arc trenchbelt, back - arc basin, and epicontinental active belt of late Paleozoic, it has different volcanic rock characteristics.
在晚古生代岛弧带、弧前海沟带、弧后盆地或陆缘活动带等构造环境下发育有不同的火山岩组合。
2
Trench (khaki) twill with black epaulets, belt and cuffs.
海沟(卡其)斜纹黑肩章，腰带和袖口。
3
According to the theory of plate tectonics, China's oceanic earthquakes can be divided into three major levels: (1)Western Pacific Ocean arc-trench strong mobile belt;