Lava plateau
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A lava plateau is a flat, wide surface (plateau) that is formed when lava comes out of the ground and spreads out very quickly. The lava layers form a lava plateau. These are general properties of lava plateaus:
- They are very large areas of basaltic lava with a layered structure.
- Lava makes the plateau bigger with each eruption.
- They tend to be flat.
- Ocean ridge eruptions make large plains on the sea floor.
One example of a lava plateau is the Columbia Plateau in Washington, Oregon, and Idaho in the United States. Its area is 63,000 square miles (160,000 km²) and is 6,000 feet(1.8 km) thick.