Distribution of tectonic hazards Flashcards

(5 cards)

1
Q

a hazard

A

a natuaral/ geophysical event that poses threat to property and life

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2
Q

collision zone

A

the impacts caused by the indo-australlian plate colliding with the Eurasia plate

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3
Q

Hotspots

A

At hotspots, there is a hot mass of rising heat under a weakness in a plate.
Magma rises to the surface through this weakness.
The Hawaiian islands all formed as a result of a mid-Pacific hotspot.

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4
Q

intra-plate volcano

A

happen at hotspots
isolated plumes of convecting heat (mantle plumes) rise towards the surface generating basaltic volcanoes.
The plume remains stationary, although the tectonic plate above moves slowly over it.

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5
Q

intra-plate earthquakes

A

associated with ancient fault lines being re-activated by tectonic stresses (e.g. minor earthquakes in the UK).
Zones of weakness are created as plates move and stresses increase.

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