The volcanic rocks are mainly associated with spilite-quartz keratophyre series, and a few volcanic rocks of the basalt-rhyrolite series and potassic rhyrolite.

• 其中火山岩主要由细碧-石英角斑岩系列火山岩组成，还有少量的玄武-流纹岩系列火山岩和富钾流纹岩。