Here's why:

* Glacial meltwater: As glaciers melt, they release a significant amount of water.

* Sediment transport: This meltwater carries a large amount of sediment that was eroded from the glacier itself and the surrounding terrain.

* Deposition: As the meltwater flows away from the glacier, its speed decreases, leading to the deposition of the carried sediment. This deposited sediment forms a distinctive landform called outwash.

Key characteristics of glacial outwash:

* Well-sorted: The sediments are usually well-sorted, meaning that particles of similar sizes are grouped together.

* Stratified: The layers of sediment are often stratified, indicating changes in the flow and sediment load of the meltwater.

* Sand and gravel: The dominant sediment type is sand and gravel, with finer particles often carried further away from the glacier.

Glacial outwash plays a significant role in shaping landscapes and creating unique geological features, such as eskers, kames, and outwash plains.