As magma rises, it carves a tube-shaped structure called a "magma conduit" or "volcanic conduit." This structure allows the magma to travel from the magma chamber beneath the Earth's surface to the volcano's vent. As pressure builds, it can lead to volcanic eruptions when the magma escapes through the conduit.
Lava tubes.
As magma rises, it carves a tube-shaped structure called a "magma conduit" or "volcanic conduit." This structure allows the magma to travel from the magma chamber beneath the Earth's surface to the surface during a volcanic eruption. The conduit can solidify into igneous rock once the magma cools and crystallizes.
When magma rises through the Earth's crust, it forms a tube-shaped structure known as a "magma conduit" or "magma chamber." This conduit serves as a pathway for the magma to move from the mantle or deeper crust to the surface, often leading to volcanic eruptions. As the magma accumulates in the chamber, it can create pressure that eventually results in explosive volcanic activity.
Resurgent dome is the term used to describe a structure that forms when magma re-enters a magma chamber, causing the floor of the caldera or crater to lift. This uplift creates a dome-shaped structure within the caldera.
As magma rises, it carves a tube-shaped structure called a "magma conduit" or "volcanic conduit." This structure allows the magma to travel from the magma chamber beneath the Earth's surface to the volcano's vent. As pressure builds, it can lead to volcanic eruptions when the magma escapes through the conduit.
Lava tubes.
As magma rises, it carves a tube-shaped structure called a "magma conduit" or "volcanic conduit." This structure allows the magma to travel from the magma chamber beneath the Earth's surface to the surface during a volcanic eruption. The conduit can solidify into igneous rock once the magma cools and crystallizes.
When magma rises and carves a tube-shaped structure, it forms a volcanic conduit or lava tube. These can serve as pathways for magma to travel from the magma chamber to the surface during volcanic eruptions.
As magma rises, it carves a tube-shaped structure called a "magma conduit" or "volcanic conduit." This pathway allows the magma to move upward from the magma chamber beneath the Earth's surface towards the surface, where it can erupt as lava. The conduit can also help form various volcanic features, such as volcanoes or lava domes, depending on the composition and behavior of the magma. Over time, the solidified magma in the conduit can create a central vent or pipe structure within the volcano.
When magma rises through the Earth's crust, it forms a tube-shaped structure known as a "magma conduit" or "magma chamber." This conduit serves as a pathway for the magma to move from the mantle or deeper crust to the surface, often leading to volcanic eruptions. As the magma accumulates in the chamber, it can create pressure that eventually results in explosive volcanic activity.
Resurgent dome is the term used to describe a structure that forms when magma re-enters a magma chamber, causing the floor of the caldera or crater to lift. This uplift creates a dome-shaped structure within the caldera.
batholiths
The magma in a sill that pushes up to form a dome-shaped rock structure is called laccolith. Laccoliths form when magma intrudes between layers of sedimentary rock and causes the overlying rocks to arch upwards, resulting in a dome-like structure.
An igneous intrusive feature that forms from a lens-shaped mass of magma that arches the overlying strata upward is called a laccolith. Laccoliths typically create a dome-like structure as the magma pushes the surrounding rock layers upward. They are often associated with volcanic activity and can vary in size.
The structure you are describing sounds like a volcanic dome or plug. These are created when highly viscous magma solidifies near the surface, causing the ground above to be pushed upward. Over time, erosion may expose the magma structure, forming a mushroom shape.
The type of underground magma formation that is usually dome-shaped is called a "laccolith." Laccoliths form when magma intrudes between layers of rock and causes the overlying strata to bulge upward, creating a dome-like structure. This occurs typically in sedimentary rock layers, resulting in a rounded, uplifted formation that can sometimes be seen at the surface.