Glaciers
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Created by:
evergreen2011 on October 24, 2011
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Glacier Terms
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23 terms
Terms | Definitions |
|---|---|
 Erratics | Large glacial boulders that have been transported into an area. |
| Eskers | Long, winding ridges formed when sand and gravel fill meltwater tunnels beneath a glacier. |
| Firn | Partially compacted and refrozen snow which has yet to become a glacier. |
| Kames | Small, cone shaped hills formed at the glacial front by meltwater pouring sediment off the glaciers surface. |
| Kettles | Circular hollows left in an outwash plain when a buried ice block melts. |
| Moraine | Accumulation of glacial till. |
| Outwash | Sediment deposited in front of a glacier by streams of meltwater. |
| Outwash Plains | Broad, stratified, gently sloping deposit of sediment formed beyond the terminal moraine by streams from melting glacier. |
| Rock Flour | Fine sand and silt formed by the crushing of rock beneath a glacier. |
| Snow Line | The lowest level of permanent reaches in summer. |
| Striations | Scratches left on rocks and bedrock by glacier movement. |
| Till | Unsorted and unstratified rock materials carried in the bottom of a glacier. |
| Valley Glacier | A long, slow moving, wedge shaped stream of ice. |
| Arete | Sharp divide that separates two adjoining cirques. |
| Cirque | A semicircular basin formed at the head of a glacial valley. |
| Crevasses | Great fissures or crack in a glacier. |
| Drumlins | Long, canoe shaped hills made of till and shaped by an advancing glacier. |
| Glacial Trough | A U-shaped valley formed by glacial erosion. |
| Ice Caps | Small ice sheets, and was found in Iceland. |
| Ice Sheet | Another name for a continental glacier. |
| Calving | process by which a block of glacier breaks off and falls into the sea to form and iceberg. |
| Continental Glacier | A large sheet of ice covering a large part of a continent. |
| Horn | Pyramid-shaped peak formed where 3 or more cirques meet. |
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