Answer :

A magmatic barrier is a structure that develops when magma is poured into cracks as sheets.

When magma seeps into a fracture and crystallizes as just a sheet intrusion, it either cuts through strata of rock or an unlayered mass of rock, forming magmatic barriers. Sediment fills an existing fissure to create clastic barriers.

Underneath the surface of the Earth, molten & semi-molten rock mixtures are known as magma. Lava is the name given to magma that occasionally breaks the surface, such as during a volcanic explosion.

This magma can breach crustal fissures or breaks, igniting a volcano. Lava is the term for magma that flows or explodes onto the surface of the Earth.

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