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GEOLOGY - EARTH'S STRUCTURE > CRUST > Flashcards

CRUST Flashcards

1
Q

two types of crust

A

oceanic/continental

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2
Q

crust composition

A

> 80km

oxygen(46%)/silicon(28%)

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3
Q

continental crust composition

A

0-70km

relatively thick/low density

primarily rock granite, which is very little iron/bout 70% silica

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4
Q

oceanic crust composition

A

0-8km

relatively thin/dense

primarily rock basalt, has some iron/bout 50% silica

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GEOLOGY - EARTH'S STRUCTURE (4 decks)

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