Glacier photos When the climate cooled Ice advanced over the
land, moving southward from Canada over the Great Lakes Region.
What would form here? Erratics along Lake Michigan Shoreline Lake
Superior Shoreline Glacial polish Kellys Island Glacial grooves
Name this glacial landform How did these lakes form? Kettle Lakes
Kettle lakes form when blocks of ice break off the front edge of a
glacier, become buried by sediment. The ice melts leaving a hole
which fills with water creating a lake. Isostatic rebound Pictured
Rocks Pictured Rocks Each of the Great Lakes began as a river.
Image from Earth Science, Tarbuck and Lutgens, 2003 As the climate
cooled The rivers froze. Glaciers moved through them widening and
deepening them to form todays lake bottoms. The sediment removed
from the river valleys was deposited in the moraines covering our
state. This is why the moraines run parallel to the shorelines of
the Great Lakes. When the climate began to warm, the glaciers began
to melt and retreat.
atLakesMovie5.htmlhttp://www.on.ec.gc.ca/greatlakeskids/Gre
atLakesMovie5.html
