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Plate Tectonics and Associated Hazards

Features of Plate margins:

Constructive (Divergent) Margins: Where plates move apart
Oceanic areas: Produce Oceanic ridges e.g. midAtlantic ridge
Longest continuous uplifted feature on the planet
Volcanic Activity: Submarine volcanoes that sometimes rise above sea level, e.g. Surtsey,
Iceland. They are fairly gentle with low…

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There are 3 types of different convergent situations.

Oceanic/Continental convergence:
Oceanic and continental plates meet and the denser oceanic plate is forced under the lighter
continental one known as subduction

Features:
Ocean trench: down warping of the oceanic plates to form a trench
Fold Mountains: Sediments that have accumulated on…

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Continental/continental convergence
Two plates meeting at as they're lower density than the underlying layers there isn't much
subduction so the sediments between them are forced up into fold mountains

Features:
Fold mountains
No Volcanic activity sue to no subduction
Shallow focus earthquakes
Deep mountain roots
Examples: IndoAustralian plate being forced…

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