Till is described as which of the following?

• A. Moraine
• B. Till
• C. Eskers
• D. Talus

Answer: (B)

Till refers to the unsorted, unstratified sediment deposited directly by a moving glacier. It is a mixture of clay to boulders that has not been sorted by water or gravity, reflecting debris picked up and carried by the ice. This makes it the term for the sediment itself. In contrast, a moraine is a landform built from this same material, formed at the glacier's edges or terminus; eskers are sinuous ridges formed by meltwater streams inside or beneath the glacier and are typically layered and sorted; talus is a pile of rock fragments that accumulates at the base of a cliff from rockfall, not glacier-derived sediment.