What is sediment primarily formed from freeze-thaw action called?

Sediment that is primarily formed from freeze-thaw action is referred to as scree. This process, known as freeze-thaw weathering, occurs in cold climates where water seeps into cracks in rocks, and when temperatures drop, the water freezes and expands. This expansion exerts pressure on the rock, causing it to fracture and break apart. Over time, as this process repeats, it generates loose, angular fragments of rock that accumulate at the base of cliffs or slopes, forming scree.

In contrast, clay is a type of sediment formed from the weathering of rocks, often in warm and humid conditions, while sand consists of finer particles resulting from the breakdown of various minerals but does not specifically form from freeze-thaw processes. Limestone is a sedimentary rock that primarily forms from marine organisms and is not related to freeze-thaw action. Thus, scree is specifically associated with the effects of freeze-thaw weathering.