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Glaciers

Surface Processes Part 4

TermDefinition
Glacier Naturally formed mass of ice and snow that move downhill under the force of gravity (develop when snowfall is greater than melting)
Glacier Movement As snow accumulate the glacier moves forward under its own mass and the pull of gravity, Sometimes called "river of ice" glaciers act like fluids and flow in a plastic-like motion, tend to move into stream cut valleys
Continental glacier Huge sheets of ice that cover entire land masses
Valley Glacier Glacier that form in high elevation in mountain valleys
U-Shaped Valleys Shape of the valley walls from glacial erosion
Erratics Large deposited fragments that can be transported hundreds of miles inside or on top of the glacier
Drumlins Streamlined oval shaped mounds of unsorted sediments
Eskers A long winding ridge of sand and gravels
Terminal Moraines A mound of till deposited along the leading edge of the glacier
Till Unsorted sediments deposited by a glacier
Glacial Grooves Long parallel scratches formed by sediment embedded in a glacier that has passed over the surface (the grooves indicate the glacier has traveled Location: central Park, NY)
Kettle Lake Depression left in the ground that is filled with glacial melt water
Outwash Plain Broad glacial feature of smaller sediment carried from the melting water of a retreating glacier
Created by: cmbinder197
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