ORM Flashcards
How many years ago did it form?
12000
How did the ORM form?
It formed as glaciers retreated and deposited sand and gravel trapped between two lobes or fingers of ice.
How high can the elevation of the ORM go up to?
300m at highest elevations
How long is the ORM
160km
Why is it important?
It has 3.2 billion dollars worth of ecological services
Provides water filtration and supplies water
Protects against floods
Provides habitat for flora and fauna
What does it supply?
It supplies well water for homes and farms
how wide is the ORM?
1 to 15km
How thick are the deposits of sand and gravel?
200m thick
How many stream/river is the ORM headwaters to?
Over 30 rivers/streams
Highest point of land?
Southern Ontario between Lake Ontario and Georgian Bay/Lake Simcoe
Water falling on the moraine either:
1) Goes down through the soil to the aquifer
2) Runs into a river flowing to Lake Ontario
3) Runs into a river flowing to Lake Simcoe
What does the Moraine have a significant deposit of?
Sand and gravel, and other materials for construction
Why do developers want to build on the moraine
1) due to a increase in demand for housing
2) Less costly, no obstructions
3) Scenic view
4) close to toronto
Name two rivers that has the ORM as their headwaters
Don River
Humber River
