The small mound formed by the deposit of rocks from a melting glacier is called a moraine.

Here's a breakdown of the different types of moraines:

* Lateral moraine: A ridge of till that forms along the sides of a glacier.

* Medial moraine: A ridge of till that forms in the middle of a glacier, created when two lateral moraines merge.

* Terminal moraine: A ridge of till that marks the furthest advance of a glacier.

* Recessional moraine: A ridge of till that marks a pause in the retreat of a glacier.

So, depending on the specific location and formation of the mound, it could be any of these types of moraines.