GEOLOGY

Detailed explanation-1: -Answer: Strombolian–a periodic weak to violent eruption characterized by fountain lava, just like the Irazu Volcano in Costa Rica.

Detailed explanation-2: -Effusive eruptions, meanwhile, are characterized by the outpouring of lava without significant explosive eruption. Volcanic eruptions vary widely in strength. On the one extreme there are effusive Hawaiian eruptions, which are characterized by lava fountains and fluid lava flows, which are typically not very dangerous.

Detailed explanation-3: -A Pelean eruption is associated with explosive outbursts that generate pyroclastic flows, dense mixtures of hot volcanic fragments and gas described in the section Lava, gas, and other hazards.

Detailed explanation-4: -Strombolian eruptions are moderately explosive eruptions of basaltic magma with moderate gas content. Strombolian eruptions consist of intermittent, discrete explosive bursts which eject pyroclasts as high as hundreds of feet into the air in firework-like incandescent rooster-tails.

Detailed explanation-5: -Plinian Eruption The largest and most violent of all the types of volcanic eruptions are Plinian eruptions. They are caused by the fragmentation of gassy magma, and are usually associated with very viscous magmas (dacite and rhyolite).