Continental Claciation Slide presentation Continental Glacier Outwash Plain

Continental Claciation Slide presentation

Continental Glacier

Outwash Plain Large areas of glacial sediment deposited by glacial streams.

Outwash Plain

Horicon Marsh

Glacial Drift Loose and unsorted rock debris distributed by glaciers and glacial melt waters. Two types: till and outwash

Till – unsorted drift

Outwash – glacial drift in layers

Erratics – Large Boulders left behind by glaciers

Moraines: a build up of sediment transported or left by the glacier

Ground Moraine – sediment deposited under moving ice.

End moraine Ü Perpendicular to glacier Ü Dumps sediment at the edge of the glacier. Ü Marks the end of the glacier

Northern Kettle Moraine -

Devils Lake – End moraine

Recessional Moraine Ü Sediment dumped by retreating ice

Recessional moraine - Alps

Inter-lobate Moraine Ü Kettle Moraine state forest is an example Ü Built between two lobes of ice.

Kettle Ü Depressions on outwash plain that often fill with water. Ü Caused by stranded ice blocks and erosion

Kettle

Kettle

Madison, WI

Greenbush Kettle

Esker Ü Look like inverted streams Ü Winding ridges of glacial drift deposited by melt-water in tunnels under the glacier Ü A stream under a glacier

Esker

Esker Parnell esker

Kame Ü Cone shaped hill of sand gravel; reverse funnel Ü Two types: Delta – meltwater deposited sediments off the top of a glacier Moulin Kame – base of a shaft through a

Kame formation Ü

Drumlin Ü Look like upside down teardrops Ü Tapered end shows the direction the glacier moved in. Ü Formed from till

Drumlin formation

Drumlins in background

Topographic map - drumlins

Chatter Marks Rocks dragged by glacier left these marks

Chatter marks

Calving Ü calving glacier: glacier that loses material by calving, usually a glacier that terminates in sea, lake, or river water

Glacial Milk Ü Glacial meltwater Ü Looks cloudy like milk

Glacial potholes – formed from melt water of glacier Baraboo, Wisconsin