where does magma come from Flashcards by Zena Outram | Brainscape

Q

divergent (MOR) EXTRUSIVE activity

A

submarine eruptions

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Q

divergent (MOR) INTRUSIVE activity

A

dolorite dykes and sills under volcano

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Q

type of magma at divergent

A

mafic

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Q

type of magma at convergent O-O

A

mafic-intermediate

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Q

type of magma at convergent O-C

A

intermediate to silicic

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Q

type of magma at convergent C-C

A

silicic

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Q

type of magma at hotspot

A

mafic

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Q

intrusive activity BATHOLITHS form where

A

convergent O-C and C-C

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Q

origin of divergent magma+ hot spot magma

A

partial melting of peridotite in asthenosphere

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Q

origin of convergent O-O and O-C magma

A

BOTH: partial melting of subducting oceanic plate

O-C: partial melting of continentalcrust + mixing of magmas

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Q

origin of convergent C-C magma

A

partial melting of deep continental crust

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