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Convergence of Plates-Ocean-Continent
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1

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At an ocean-continent converging plate boundary, mountains are formed by which process(es)?
A)extension of the crust and block faulting
B)volcanism
C)compression, folding, and faulting of the continental crust
D)thickening of the crust due to the addition of magma bodies from below
E)b, c, and d all contribute to mountain building in an ocean-continent collision
2
What is the origin of batholiths at an ocean-continent converging plate boundary?
A)Magma is generated by melting in the crust of the descending plate
B)Magma is generated by melting in the asthenosphere of the overriding plate
C)Magma is generated by melting in the asthenosphere of the descending plate
D)Magma is generated by melting in the crust of the overriding plate
E)Both b and d contribute to the formation of batholiths
3
What will happen to the sediments eroded from the mountains in an ocean-continent convergent boundary?
A)Sediments will be carried by rivers and deposited in the forearc basin
B)Sediments will be carried by rivers and deposited in the backarc basin on the craton
C)Both the forearc and backarc basins will fill with eroded sediments
D)Eroding sediments will be metamorphosed beneath the rising mountains
E)Eroding sediments will be washed into the subduction zone and carried into the mantle
4
Which is a modern example of a volcanic mountain belt at an ocean-continent convergent boundary?
A)The Andes Mountains in South America
B)The Hawaiian Islands in the Pacific Ocean
C)The Rocky Mountains in the western United States
D)The Aleutian Islands in Alaska
E)The Alps of southern Europe
5
What determines which plate will subduct where two plates meet at an ocean-continent plate boundary?
A)The older plate will subduct
B)The younger plate will subduct
C)The faster moving plate will subduct
D)The slower moving plate will subduct
E)The continental plate cannot subduct, so the oceanic plate will always subduct





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