Card Set Information
began~2.5 million years ago
ended~8,000 years ago
at least 3 periods of Ice advance
Laurentide Ice Sheet
The ice sheet that descended over north America during the Pleistocene age
a convex hill (slope > 3%)
Plain Landform component
a convex hill (slope < 3%).
any pot-shaped pit or hole not over limestone
deeper than a closed depression.
Deeper than a pothole
– a depression, commonly funnel-shaped, over limestone
– it is on a karst plain and its drainage is subterranean