Under the tectonic backgrounds of island arc belt, fore-arc trench belt, 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。