Paleo river deposits are sedimentary deposits that were formed by rivers in the geologic past. These deposits can include sand, silt, and clay, as well as rocks and other materials that were carried by the river and deposited along its course. These deposits are often found in sedimentary basins, which are areas where sediment has accumulated over time.

Paleo river deposits can be used to study the geologic history of an area and to understand the conditions that existed when the deposits were formed. For example, the composition of the deposits, the size and shape of the grains, and the types of rocks present can all provide information about the climate, vegetation, and topography of the area during the time the deposits were formed.

Paleo river deposits are commonly found in sedimentary basins that have been uplifted and exposed at the surface through tectonic activity or erosion. They can also be found in subsurface rock formations, where they can be studied using techniques such as drilling and geophysical surveying