1. On the surface:
* Supraglacial debris: This is debris that is found directly on the surface of the glacier. It can be:
* Rockfall: Rocks that have fallen from surrounding cliffs.
* Moraine: Accumulations of rock, soil, and other materials that have been transported by the glacier.
* Wind-blown debris: Dust, sand, and other fine particles that have been carried by the wind and deposited on the glacier.
* Biological debris: Plant and animal remains, such as leaves, branches, and carcasses.
2. Within the glacier:
* Englacial debris: This is debris that is embedded within the glacier ice. It can be:
* Rock fragments: Rocks that have fallen onto the glacier and become incorporated into the ice.
* Sediment: Sand, silt, and clay that have been transported by the glacier.
* Air bubbles: Small bubbles of air that are trapped within the ice.
3. At the base of the glacier:
* Subglacial debris: This is debris that is found at the base of the glacier, beneath the ice. It can be:
* Bedrock: Rock that forms the base of the glacier.
* Till: Unsorted sediment that has been deposited by the glacier.
Where debris is found can also depend on the glacier's movement and the surrounding environment:
* On the glacier's tongue (lower end): You'll likely find more moraine and other debris that has been transported by the glacier.
* In areas of high rockfall or avalanche activity: More rock debris will be present.
* In areas with high wind exposure: More wind-blown debris will be deposited.
It's important to note that the distribution of debris on a glacier can vary greatly, depending on the specific glacier and its environment.
