1. Deposits by Glaciers
material carried by glaciers is deposited by melting
deposits of glacial origin are called drift.
2 kinds of drift: Till and outwash
Note un-sorted vs. sorted
What is the main difference in grain size? Why? Dumped versus carried out by water
Till at the edge of a glacier
Glacial outwash plain

2. Types of Drift: Till Outwash
Till is left under or along the sides of a moving glacier
un-sorted and un-stratified.
Outwash is deposits from streams of glacial meltwater
sorted and stratified
Till is melted and dumped
Outwash has time to settle

3. Moraines Ground moraines form a thin, fairly even deposit over
the area of the glacier
Lateral and medial
moraines form ridges
End moraines form a ridge at the ice front
when a glacier recedes, recessional moraines form
Terminal moraines mark the glaciers farthest advance
How do we get a medial moraine?
Put these in the right order, closest to farthest from the ice front……..use board
Terminal, End, Recessional

4. Glacial Erratics Large glacial boulders are called erratics
Don’t match the surrounding
terrain
Like our coffee beans and popcorn from last day

5. Drumlins: Drumlins are long, smooth canoe-shaped hills made of till
point in the direction of glacier movement
Likely formed when an advancing glacier swept over a previous moraine
Not easy to see from on the ground but can get a great view from an airplane

6. Outwash Plains and Eskers:
Outwash plains= overlapping fans of gently sloping, stratified, meltwater deposits
in front of glacier
Form broad flat areas
Time for gravity to have an effect, the heaviest deposits fall out first

7. Eskers:
Subglacial stream tunnels leave deposits as winding ridges called Eskers.
Long winding ridges from tunneled glacial streams

8. Kames, Kettles and Deltas
Kames = small cone-shaped hills of stratified sand and gravel, formed by stream deposits
Kettles = circular hollows found on outwash plains, formed by melting blocks of buried ice.
Deltas may form when glacial streams empty into lakes.
Kames-steep mounds or cone shaped hills composed of stratified drift of diverse origin
- form in holes in the ice where sediment accumulates and once the ice melts it leaves the heap of sediment behind. 
Kettles: block is trapped under deposits, once melts the deposits cave in
Eskers: form in tunnels in the ice sheet.
-The sides of the tunnel act as part of the channel for a melt water stream.
-As the glacier recedes, the support for the stream is removed and the stream deposits its load into a long ridge-like form.

9. Lakes Made by Glaciers
Glaciation leaves new basins or depressions in the land surface
These may fill with water to form lakes, ponds, or swamps.
Types of lakes: Cirque lakes, Kettle lakes, Moraine dammed lakes, Valley scoured lakes.
Explain moraine dammed lake

10. Glacier Jeopardy!