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Think about it

?Extrusive vulcanicity along a destructive plate boundary is more hazardous than along a constructive plate boundary.". What are the conditions for extrusive vulcanicity? With appropriate examples, critically evaluate the above statement.. Introduction. Define the terms ?extrusive vulcanicity', ?des

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Think about it

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    1. Think about it

    2. “Extrusive vulcanicity along a destructive plate boundary is more hazardous than along a constructive plate boundary.” What are the conditions for extrusive vulcanicity? With appropriate examples, critically evaluate the above statement.

    3. Introduction Define the terms ‘extrusive vulcanicity’, ‘destructive plate boundary’ and ‘constructive plate boundary’ – extrusive vulcanicity: volcanic activities that occur on the earth’s surface – destructive plate boundary: plate boundary where plates converge – constructive plate boundary: plate boundary where plates diverge

    4. Content ~ Description Conditions needed for extrusive vulcanicity to occur – high magma pressure – release of magma pressure through cracks - the destructive plate boundary is more hazardous that that of the constructive plate boundary

    5. Content ~ Evaluation Reasons for extrusive vulcanicity along destructive plate boundary to be more hazardous – destructive plate boundaries are usually found at the coastal area – where population density is high – collision of plates results in subduction – rise of magma pressure – due to melting of subducted plates

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