A large rounded elevation on the Earth's surface formed by rising magma is called what?

A large rounded elevation on the Earth's surface formed by rising magma is called what?

• A. Basin
• B. Caldera
• C. Mountain
• D. Dome

Answer: (D)

A dome is a large rounded elevation formed when magma pushes upward under the crust, lifting the surrounding rocks into a rounded bulge that reaches the surface. This upward pressure can come from magma intruding between rock layers and arching the overlying beds, or from lava that piles up near a vent to form a volcanic dome. Basins are depressions, calderas are large collapsed craters after eruptions, and mountains are tall elevations formed by various processes; the rounded uplift caused by magma beneath the surface is what defines a dome.

A dome is a large rounded elevation formed when magma pushes upward under the crust, lifting the surrounding rocks into a rounded bulge that reaches the surface. This upward pressure can come from magma intruding between rock layers and arching the overlying beds, or from lava that piles up near a vent to form a volcanic dome. Basins are depressions, calderas are large collapsed craters after eruptions, and mountains are tall elevations formed by various processes; the rounded uplift caused by magma beneath the surface is what defines a dome.