A drumlin is usually made of ________.
A)till
B)sand and gravel
C)rock
D)mud

Question

Quizplus · Accepted Answer

A drumlin is a hill that is formed by glacial till, which is a mixture of clay, sand, gravel, and boulders that have been deposited by a glacier. As the glacier moves, it picks up sediment and drops it in a long, narrow ridge-shaped mound that is aligned with the direction of ice movement. Sand, gravel, rock, and mud may be present in the till, but the primary composition is a mixture of these materials.

A Drumlin Is Usually Made of ________