The mixture of sediments deposited directly by a glacier is called

(chemistry or biology? )

Answer is: The mixture of sediments deposited directly by a glacier is called till.

Till is unsorted glacial sediment, showing no stratification.

There are two types of till:

1) primary deposits – made directly by glacier action.

2) secondary deposits – reworked by erosion.

There are also lodgement tills, sublimation tills, melt out tills and deformation tills.