What are the products that obtained during the volcanic eruptions?
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The eruptive products are highly variaible and largely dependent on the composition, viscosity, and gas content of the erupting magma. Lava flows, for example, are more common in relatively non-explosive basaltic eruptions associated with shield volcanoes, scoria cones, and fissures.
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lava reaches the sea it forms "pillow lava" as it hits the sea water. Lava that cools on the ground surface forms ropey lava, that looks somewhat like coils of rope you see lying on the deck of a ship.
If the magma is silicic formed from continental crust, it tends to be thicker and more viscous. This causes the volcanoes to be more explosive. Think of it as the difference between a boiling pot of water, or a boiling pot of oatmeal or spaghetti sauce. The more viscous lava can retain more pressure until it is exceeded and the volcano explodes similar to what occurred to Mt. Saint Helens in the Cascade Range, that forms pyroclastic volcanoes
If the magma is silicic formed from continental crust, it tends to be thicker and more viscous. This causes the volcanoes to be more explosive. Think of it as the difference between a boiling pot of water, or a boiling pot of oatmeal or spaghetti sauce. The more viscous lava can retain more pressure until it is exceeded and the volcano explodes similar to what occurred to Mt. Saint Helens in the Cascade Range, that forms pyroclastic volcanoes
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