Answer
Medial moraines and lateral moraines are related in that they both refer to types of moraines formed by the accumulation of debris and sediment carried by glaciers. However, they differ in their locations and formation processes.
Lateral moraines form along the sides of a glacier and are composed of debris that has fallen onto the glacier's surface from the adjacent valley walls. As the glacier moves, it collects and transports this material along its edges, forming distinct sediment ridges.
Medial moraines, on the other hand, form when two glaciers merge. They occur in the middle or center of the combined glacier, resulting from the convergence of the lateral moraines of the two original glaciers. As the glaciers meet, their lateral moraines join, creating a single, elongated ridge of debris down the middle of the combined glacier.
Work Step by Step
As per text in section 18.4