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Unformatted text preview: glaciers. 10. A moraine is a deposit of glacial till that is left behind by a glacier. There are many types of moraines, Ground, Terminal, Recessional, Lateral, and Medial. 12. A conveyor belt, because the sediment is picked up in the zone of ablation, the glacier flows down, and melts in the zone of wastage and deposits the sediment like a conveyor belt. 14. The landscape features are U-shaped valleys, places where erosion overdeepened valley to form lakes, hanging valleys, knife-edge ridges and pointed peaks, and moraines. 16. 16 million square kilometers of North America were covered by ice. 18. To determine how many glaciations occurred they can look at the number of glacial till deposits that are separated by native sediment layers. To determine when the glaciation occurred they can use the half-life of things (possibly glacial bark) found in the till left behind be the glacier....
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This note was uploaded on 12/28/2011 for the course IDS 159 taught by Professor Fischer during the Fall '08 term at Miami University.
- Fall '08