The conduit of a volcano is a crucial passage through which magma travels from the magma chamber to the surface. It is typically a narrow, pipe-like structure that allows molten rock to rise during volcanic activity.
When a volcano erupts, the pressure builds up in the magma chamber below the Earth’s surface. The conduit serves as the main exit route for this magma. As magma ascends through the conduit, gases dissolved in it can expand, contributing to explosive eruptions if the pressure becomes too high.
Furthermore, the geometry and composition of the conduit can influence the style of the eruption. For instance, a narrow conduit may lead to more explosive eruptions due to the rapid buildup of pressure, while a wider conduit might allow for a more effusive eruption where lava flows out gently.