EVIDENCE OF GLACIERS
Glacial Landform:
U-Shaped Valley - A Ushaped valley or glacial
trough is formed by the
process of glaciation. It has
a characteristic U shape,
with steep, straight sides
and a flat bottom.
Cirque – a steep walled,
bowl-shaped mountain
basin formed by a glacier.
Arete - An arête is a thin,
crest of rock left after two
adjacent glaciers have
worn a steep ridge into the
rock
Horn - A horn results when
glaciers erode three or
more arêtes, usually
forming a sharp-edged
peak
Drawing/Diagram:
Name: _________________________
Esker - a long, narrow,
winding ridge composed of
layered sand and gravel
deposited by a glacial
meltwater stream.
Drumlin - Drumlins are
long, teardrop-shaped hills
of rock, sand, and gravel
that formed under moving
glacier ice. They can be up
to 2 kilometers long.
Erratic - Glacial erratics are
stones and rocks that were
transported by a glacier,
and then left behind after
the glacier melted.
Morraine - Moraines are
accumulations of dirt and
rocks that have fallen onto
the glacier surface or have
been pushed along by the
glacier as it moves. A
receding glacier can leave
behind moraines that are
visible long after the
glacier retreats.