restless earth

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Continental plate
older- more than 1500m years old... less dense... silica and aluminium... cannot sink
1 of 5
oceanic plate
younger... less than 200m years old... denser... silica and magnesium... can sink... can be renewed and destroyed
2 of 5
plate margins?
constructive...destructive...conservative...collision
3 of 5
fold mountain formation
plates are converging...destructive plate margin where there is a trench... collision if not...sediment brought down by river...collects in the geosyncline...sediment builds up...compressed into rock...plate movment... compressions of rock..fold
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fold mountain uses?
vally floor:farming forestry:in alps prevents soil erosion and avalanches on slopes tourism: activities eg chamonix quarrying: slate near morzine hydro-electric power: serre poncon dam. fast flowing streams
5 of 5

Other cards in this set

Card 2

Front

oceanic plate

Back

younger... less than 200m years old... denser... silica and magnesium... can sink... can be renewed and destroyed

Card 3

Front

plate margins?

Back

Preview of the front of card 3

Card 4

Front

fold mountain formation

Back

Preview of the front of card 4

Card 5

Front

fold mountain uses?

Back

Preview of the front of card 5

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