Volcanic Eruptions

Describe the pyroclastic material and magma

What is Pyroclastic Material?

Pyroclastic material forms when magma breaks into fragments during an eruption. Other pyroclastic materials form when fragments are erupting lava cool and solidify as they fly through the air. The material is expelled when a volcano erupts, the dissolved gases within lava escape and send molten and solid particles shooting into the air. So felsic, lava tends to explode and throw pyroclastic material into the air. Pyroplastic material is made out of felsic and mafic magma. Felsic is has a high viscosity and it has more trapped gasses than magma which makes it more violently. It's also very light colored and is made of Sillica and Feldspar. Mafic has a lower viscosity and has less trapped gases which it makes a quiet eruption. Mafic is very dark and is made of Magnesium and Iron.

Pyroclastic Material

Pyroclastic flows and lava flows at Etna volcano

What is lava flow?

Their is three types of major lava. A lava flow is the result of a volcanic eruption, caused by the rise of magma to the earth's surface. Mafic magma has low viscosity and less trapped gases. It is also made of magnesium and iron and it's dark colored. Felsic magma is more violent because it has a higher viscosity and it has more trapped gasses. It's also very different its light colored and it made of Sillica and Feldspar.

Lava Flow

kalapana Lava Flow

Types of Volcanoes

Volcanic activity produces a variety of characteristic features that form during both quiet and explosive eruptions. The lava and pyroclastic material that are ejected during volcanic eruptions build up around the vent and form volcanic cones. Volcanic cones are classified as three main types.

Volcanic Eruption

Iceland Volcano Eruption 2010 April Live Footage