Answer
Glacial deposits are collectively referred to as "glacial drift." Glacial drift can be classified into two main types: till and stratified drift. Till consists of unsorted and unstratified sediment directly deposited by glaciers, including a mixture of different-sized rock fragments. In contrast, stratified drift refers to sediment sorted and layered by meltwater streams associated with glaciers, often consisting of sorted layers of sand, gravel, and sometimes silt or clay.
Work Step by Step
As per text in section 18.4
