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?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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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 earths 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