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EzraWhen magma is forced into fractures in the Earth's crust, it can lead to the formation of intrusive igneous rock formations such as dikes and sills. These formations occur when the magma cools and solidifies within the fractures, creating igneous structures that can later be exposed at the surface through erosion.
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How does magma get pushed through a vent?
Magma gets pushed through a vent due to the build-up of pressure beneath the Earth's surface. As the magma rises, it creates fractures in the rocks above, eventually reaching the surface through the vent. This process is driven by the buoyancy of the magma and the force of gas expansion within it.
When rock melts at calderas and then is forced toward the crust as what?
When rock melts at calderas, it forms magma. This magma is then forced towards the Earth's crust as lava through volcanic eruptions.
Lava that cuts across rock layers hardens to form a feature called?
a dike. Dikes are vertical or near-vertical igneous intrusions that cut across the existing rock layers. They form when magma is forced into fractures and then cools and solidifies underground.
Could property of magma that cause it to be forced upward towards earth surface?
Because magma is less dense than the surrounding solid rock, it is forced upward toward the surface. When magma reaches the surface and flows from volcanoes, it is called lava.
What is molten magma called when it is forced onto the earth's surface?
Lava!
