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53 Cards in this Set
- Front
- Back
- 3rd side (hint)
How is Glacial ice different? |
It is formed by layered and compressed unmelted snow |
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What is zone of ablation? |
Where glacial loss takes place, mostly to melting. |
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What is the zone of accumulation? |
Where snowfall occurs throughout the summer and the glacier gains mass |
When I gamble. Just kidding, you don't get hints |
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What is the equilibrium line? |
Between the zone of accumulation and the zone of ablation where gains equal loss |
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Ice cap |
Glacial coverings so tall only the mountain tops show |
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Ice field |
Glaciers converging into valleys |
Similar to river to tributary |
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Firn |
Granular compacted snow |
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True or false, glaciers move by accumulation of material at the base |
False The whole glacier flows |
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What is a surge? |
Rapid glacial movement |
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Crevasses |
Large vertical cracks within the rigid, brittle upper layer of a glacier |
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What parts of a glacier move slowest? |
sides |
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Cirque |
A bowl shaped steep sided depression in bedrock with a sloping floor |
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How do cirque basins form glaciers? |
They fill with ice and spill. The resulting spill becomes a glacier |
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Valley glacier |
Glacial ice filling a valley (not necessarily all the way) |
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Lateral moraine |
Sediment moved and accumulated by a glacier on its sides |
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Medial moraine |
When two glaciers converge their lateral moraines form a medial moraine |
Think Median |
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End moraine |
A place where a glacier stopped and sediment accumulated infront of it. |
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Plucking |
When blocks or fragment of bedrock are broken loose and carried with the glacier |
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Tributary glacier |
Converging glacier that contributes to the flow and mass of another glacier |
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Basal Ice |
The bottom ice layer of a glacier |
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Basal slip |
Glacial sliding caused by the lubrication from the meltwater beneath it |
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Ice regelation |
Ice melting due to friction. Rough surfaces increase the rate of this process |
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What are the pros of glacial erosion compared to liquid water? |
Large Heavy |
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What are the cons of glacial erosion compared to liquid water? |
Slow No chemical weathering No dissolving No game, son |
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Abrasion |
Rock on rock crime (erosion) |
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Grooves are created from? |
Large rocks the glacier dragged along |
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Striations are made from? |
Coarse sand, pebbles |
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Polish is caused by? |
silt being dragged by a glacier |
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Drift |
Any type of glacial deposit |
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Where are the 4 places glacial transport can take place? |
Within the glacier Above the glacier On the glacial bed Within meltwater |
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Stratified drift |
Shit is from meltwater |
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Outwash |
Stratified drift that is well sorted |
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Ice contact |
Stratified drift that is poorly sorted |
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Dirty ice |
When a glacier plows through a end moraine and picks up the sediment |
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What kind of glacier erodes rock and sharpens it? |
Valley |
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What two landforms are created from eroding and sharpening a mountain |
Horn: sharpened peak Arete: sharpened ridges |
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What three affects does a post glacier valley have |
U shaped Valley Hanging waterfalls Fjord |
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Fjord |
Narrow, steep sided, elongated inlet (bay like area) formed when a glacier leaves and seawater takes its place |
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Tarn |
A lake dammed by a moraine |
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Till Plain |
Unsorted deposits characterized by a low, rolling relief |
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What's the difference between a till and a moraine |
Moraine: ridge Till: Flatish |
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Stratified drift |
Distinct layers of deposited sediment |
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Proglacier lake |
A lake infront of a glacier formed from meltwater |
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Outwash plain |
Plain formed by a receding glacier. Has both removed material and deposited material |
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Drop stone |
When a glacier drops a rock in a body of water |
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Fine grain is an indicator of what kind of water flow? |
Lesser |
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Large rocks are an indicator of what kind of water flow? |
greater |
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Kettle lake |
A chunk of glacial ice Covered by sediment Melts creating a depression And fills up with water |
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Esker |
Snake like ridges created from the sediment from rivers inside glaciers |
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Kames |
A mound created from a river running off a continental glacier and depositing sediment |
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Terminal moraine |
The furthest end moraine |
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Drumlin |
A long smear of high topographic area that got ****** up by a ****** glacier |
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Great lakes in North America were formed as |
Glacier carved deep troughs that filled with meltwater |
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