Perhaps you're thinking of "volcanic mountains"?
If so, volcanic mountains are formed by the accumulation of lava and volcanic ash erupted from a volcano. They are associated with various types of faults, depending on the specific geological setting:
* Normal faults: These are common in areas where the Earth's crust is being pulled apart (extensional tectonics). They can create rifts and valleys, allowing magma to rise and erupt, forming volcanoes.
* Reverse faults: These occur in areas where the Earth's crust is being compressed (compressional tectonics). They can cause volcanic activity by forcing magma upward.
* Strike-slip faults: These are faults where the movement is horizontal, parallel to the fault plane. While they don't directly cause volcanic eruptions, they can influence the location and type of volcanic activity by controlling the movement of magma.
Please clarify your question if you meant something else.
