Trench sedimentation

Trench sedimentation occurs in deep ocean trenches, where materials like mud, sand, and debris settle to the seafloor over time. These sediments are transported by underwater currents, gravity, or biological activity, gradually accumulating in the deep, narrow valleys called trenches. This process helps build up layers of sediment that can eventually become rock, playing a key role in shaping Earth's geology and recycling materials between the Earth's crust and surface. It also provides important clues about Earth's history and tectonic activity beneath the ocean.