How did landslide break rocks into sediment?

Landslides break rocks into sediment through a process called mechanical weathering. When a landslide occurs, the force and pressure of the moving mass of rock and debris can cause rocks to collide with each other, breaking them into smaller pieces. This process is known as abrasion. Additionally, the rocks may also be crushed and ground down as they are carried along by the landslide, further breaking them into smaller fragments. Over time, these broken rocks and debris are deposited as sediment at the base of the landslide, where they can eventually be transported and deposited elsewhere by water, wind, or ice.