Techtonic Settings and Earth Materials Flashcards

Oh god (6 cards)

1
Q

Compositional layers of earth

A

Crust, Mantle, Core

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2
Q

Mechanical layers of earth

A

lithosphere, asthenosphere, mesosphere, inner core, outer core

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3
Q

Mafic rocks

A

rich in magnesium and iron, oceanic crust

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4
Q

Felsic rocks

A

rich in silica, oxygen, aluminum, often continental crust

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5
Q

Ocean Crust Structure

A

ultramafic layered rock, gabbro, pillow lavas and sheeted dikes (allowing magma to rise to surface), added sediments

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6
Q

Ophiolites

A

Piece of oceanic crust obducted onto continental crust

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