What is a mixture of sediment a glacier deposits in the surface?

A mixture of sediment that a glacier deposits on the surface is called "glacial till." This material is composed of various sizes of sediment, including clay, silt, sand, gravel, and boulders, which have been eroded and transported by the moving ice. When the glacier melts, it drops this unsorted debris, forming landforms such as moraines, drumlins, and outwash plains. Glacial till is significant for understanding past glacial movement and the geological history of an area.