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| natural bodies of land ice that flow- form when snow accumulates to great depths |
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| loss of snow and ice by evaporation or melting |
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| glacier breaks away chunks of bedrock; exploits pre-existing fractures in bedrock |
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| sharp jagged mountain ridges |
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| U-shaped valley carved by glacier which is filled with ocean water |
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| form when freshwater, glacial ice flows into oceans, breaks into big chunks and floats free; |
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| much thinner and more continuous; formed by the direct freezing of ocean water with snow accumulation on top (THINNER/ CONTINUOS) |
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| sea ice/frozen ocean water that completely covers sea surface (north pole) |
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| all sediment and rock debris that is deposited by glaciers |
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| unstratified glacial drift deposited directly by glaciers |
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| which makes furthest limits of glaciation; curved pattern |
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| markes side of alpine glacial trough where edge of ice touches the wall |
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| merge of 2 glaciers; when 2 alpine glaciers converge, their lateral moraines merge and new combined glacier has one moraine then run down middle of combined glacier |
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| rounded oval hill formed of till; inverted teaspoon |
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| what was on bottom of glacier |
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| outwash plain; melt water streams issued from glacier; layer upon layer of sand and gravel carried by meltwater streams |
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| sediment deposited by meltwater streams that are flowing in ice tunnels underneath glaciers; long sinuous ridges of sediment that were deposited in tunnels; marks ice tunnels when glacier melts |
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| widespread recession of ice sheets (occurs during periods of warming global climate) |
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| time period between two glaciations |
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| sun is not working as hard to produce; |
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| how close earth and sun are; take place every 100 thousand years |
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| wobble in earth’s rotational axis with respect to plane of earth’s orbit; 41 thousand year circle |
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| change in rotational axis in respect to stars; complete cycle is 26 thousand years |
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| 3 factors; combined effects of 3 factors corresponds roughly to ice ages of last million years |
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