To do this, 2 continental plates, 2 ocienic plates, or 1 of each must collide together. That's how the Himalayas were made. Or there might be a tunnel of magma trying to breach the surface of the Earth.
The magma/lava can create tremendous pressure under the crust. This can cause the crust to bulge. If relieved, though an eruption, often the bulge collapses, resulting in a caldera.
The pressure inside the earth builds and builds. There are no vents or fissures for it to come out so it just explodes or bulges into the earths suface.
Magma and lava create bulges in the Earth's surface through the plutons that rise from a plate subduction zone. These plutons are made up of molten rock, which is primarily magma.
basically, the lava cant find a fissure to exploit hence the lava is just building up causing a bulge eventually it'll pop.
Upward movement of magma
How did the volcano kohala form
A cryptodome forms when very viscous magma (underground molten rock) moves to a location near the surface, often inside a volcano, and essentially inflates the ground, forming a bulge.
It means the pressure is increasing behind the plug.
A volcanic laccolith is a mass of igneous rock that is associated with a volcano. It is formed from magma that did not make it to the surface, but that spread out laterally. It forms a bulge in the land around the volcano.
After a earthquake.
A cryptodome forms when very viscous magma (underground molten rock) moves to a location near the surface, often inside a volcano, and essentially inflates the ground, forming a bulge.
Magma is rising towards the surface prior to an eruption.
the magma growing in size and large cracks forming
How did the volcano kohala form
A cryptodome forms when very viscous magma (underground molten rock) moves to a location near the surface, often inside a volcano, and essentially inflates the ground, forming a bulge.
It means the pressure is increasing behind the plug.
Gee, I hope this tight shirt hides my bulge.Is a bugle with a bulge actually a saxophone?"The caldera has a fresh bulge today", shouted the rider as he spurred his horse faster down the volcano's trail.
A volcanic laccolith is a mass of igneous rock that is associated with a volcano. It is formed from magma that did not make it to the surface, but that spread out laterally. It forms a bulge in the land around the volcano.
WHat is a volcano
Mountains form when the volcano reaches the surface
Stars form in all parts of our galaxy - not just the "arms". Stars do indeed form in the central bulge. The vast majority of hot, young, blue stars are formed in the arms, but stars also form in the central bulge as well.
Rivers,Streams,and ponds