Here's why:

* Moraines are accumulations of rock debris, sediment, and till that have been transported and deposited by glaciers.

* Deposition refers to the process of dropping or settling of material carried by a glacier as it melts.

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

* Lateral Moraine: Forms along the sides of a glacier.

* Medial Moraine: Forms in the middle of a glacier when two glaciers merge.

* Terminal Moraine: Marks the furthest advance of a glacier.

* Recessional Moraine: Forms as a glacier retreats and deposits material at different points.

* Ground Moraine: A sheet-like deposit of till spread over a large area.

Let me know if you'd like more detail on any of these!