A deposition of till that forms behind a terminal moraine as the glacier retreats and is generally spread widely across the ground surface is called a(n)
A) outwash plain.
B) till plain.
C) drumlin swarm.
D) lateral moraine.

Question

Quizplus · Accepted Answer

A deposition of till behind a terminal moraine is called a till plain. Till is a mixture of different sizes of rock debris left behind by a glacier as it retreats, and a terminal moraine marks the end of the glacier's advance. The till plain is spread out across the ground surface and can be used to identify the extent of glaciation in a region. A drumlin swarm is a collection of streamlined hills left behind by the glacier, and a lateral moraine is a deposition of till on the sides of a glacier. An outwash plain is formed by the meltwater from a glacier carrying sediment away from the ice until it is deposited downstream.

A Deposition of Till That Forms Behind a Terminal Moraine