The bulk of the volcano is basaltic, but the slopes are dotted with cones and lava flows consisting of glassy, silica-rich lavas called dacites.

• 此火山的主体是玄武岩，但是山坡却点缀著由石英安山岩（种玻璃质、含矽的熔岩）成的熔岩锥和熔岩流。