GEOLOGY

Detailed explanation-1: -Explosive eruptions are characterized by gas-driven explosions that propels magma and tephra. Effusive eruptions, meanwhile, are characterized by the outpouring of lava without significant explosive eruption.

Detailed explanation-2: -Plinian eruption Known as the most powerful type of eruption, a plinian eruption is characterized by continuous gas blasts and explosive ejection of viscous lava, gas-rich magma, and large volumes of volcanic rock known as pumice. It can last less than a day to several months.

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: -Explosive eruptions occur where cooler, more viscous magmas (such as andesite) reach the surface.