fluvial deposits

Fluvial deposits are sediments such as sand, gravel, and silt that are transported and laid down by flowing water, typically in rivers, streams, or streams entering larger bodies of water. These deposits form when the water slows down, causing the heavier materials to settle out of the current. Over time, these sediments can build up to create features like riverbanks, deltas, and floodplains. They provide important clues about past water flow, climate, and landscape changes, and often serve as fertile ground for agriculture and ecosystems.