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A glacier is a large, slow moving river of ice, formed from compacted layers of snow, that slowly deforms and flows in response to gravity. River of Ice.

Published byDora McDonald Modified over 6 years ago

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Presentation on theme: "A glacier is a large, slow moving river of ice, formed from compacted layers of snow, that slowly deforms and flows in response to gravity. River of Ice."— Presentation transcript:

1 A glacier is a large, slow moving river of ice, formed from compacted layers of snow, that slowly deforms and flows in response to gravity. River of Ice

2 alpine glaciers: found in mountain terrains
Two types of glaciers alpine glaciers: found in mountain terrains continental glaciers: cover larger areas

3 alpine glaciers: found in mountain terrains
Two types of glaciers alpine glaciers: found in mountain terrains continental glaciers: cover larger areas

4 alpine glaciers: found in mountain terrains
Two types of glaciers alpine glaciers: found in mountain terrains continental glaciers: cover larger areas

5 alpine glaciers: found in mountain terrains
Two types of glaciers alpine glaciers: found in mountain terrains continental glaciers: cover larger areas

6 alpine glaciers: found in mountain terrains
Two types of glaciers alpine glaciers: found in mountain terrains continental glaciers: cover larger areas

7 alpine glaciers: found in mountain terrains
Two types of glaciers alpine glaciers: found in mountain terrains continental glaciers: cover larger areas

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9 Changes in the Qori Kalis Glacier, Quelccaya Ice Cap, Peru, are shown between 1978 (top) and The glacier retreat during this time was 1,100 meters. Photo credit: Professor L. Thompson

10 Breidamerkurjökull Ice Cap and shows the changes over a three-year time period, between 1997 and

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12 River of Ice U-Shaped Valleys

13 Tongass National Forest, Alaska, USA.

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18 River of Ice U-Shaped Valleys Scratched Rock

19 Glacial Scratches and Grooves

20 River of Ice U-Shaped Valleys Scratched Rock Unsorted Sediment

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22 River of Ice U-Shaped Valleys Scratched Rock Unsorted Sediment Erratics

23 A glacial erratic is a piece of rock that deviates from the size and type of rock native to the area in which it rests; the name "erratic" is based on the errant location of these boulders. These rocks were carried to their current locations by glacial ice. Erratics can range in size from pebbles to large boulders.

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27 River of Ice U-Shaped Valleys Scratched Rock Unsorted Sediment Erratics

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