8.8 NOTES
What landforms do glaciers create?
Objective: Describe two
landforms created by glaciers
It takes a long time for
glaciers to melt. When
it does, it deposits till,
which builds up into
long, low ridge, called a
moraine. When the till
is deposited in front of a
glacier, it is called a
terminal moraine.
When it is deposited
along the sides of a
glacier, it is called a
lateral moraine.
Drumlins are oval-shaped
mounds of till that many
times form in groups. The
tip of a drumlin points in the
direction that the glacier
was moving.
Glaciers that formed in river valleys weathered and eroded the valleys
making them deeper over time. As the glaciers moved, they dropped
off the till as they melted. The melted water became glacial lakes.
Glacial lakes are usually long, narrow, and deep. The Great Lakes and
New York’s Finger lakes are examples of glacial lakes.
If the moving glacier leaves
behind a huge mass of ice
covered with sediment, it
can leave a large hole in the
ground. The hole may fill in
with melt water, leaving a
lake behind. This lake is
called a kettle lake.