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The image displays a sequential diagram illustrating the development of a supervolcano, featuring five main phases: (1) initial land depression with the distinction of the surface, crust, and mantle layers, (2) formation of a magma chamber below the surface, crust, and mantle, (3) pressurized build-up leading to a fissure, showing the surface, crust, mantle, and magma chamber, (4) eruption phase with visible smoke and lava, indicating magma rises from beneath the surface through the crust and mantle layers, (5) resultant reduced size of the land formation post-eruption with labeled surface, crust, and mantle layers.
Given the complexity of the image, the above description may not be entirely accurate.
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The diagram illustrates the process of how a supervolcano is formed. Overall, there are four steps involved in this process starting from the creation of the magma chamber to the formation of giant caldera.
To begin with, an intense hot plume pushes up from the deep mantle in which extreme heat melts rock and creates a chamber below the surface. Once the magma chamber is created in the crust area, a high-pressurized magma then is accumulated in this zone which leads to the formation of cracks along the surface edge.
When fissures expand and the surface cannot contain the high pressure of magma, the gases and magma eventually explode and rupture the Earth’s crust, creating a violant super eruption and emptying the magma chamber. Finally, after the eruption, because of the emptied chamber, the overlying rock becomes less supported and collapses, forming a depression on the surface wherein a huge crater or a giant caldera is created.
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