Techtonic Settings and Earth Materials

Question 1

Compositional layers of earth

Answer 1

Crust, Mantle, Core

Question 2

Mechanical layers of earth

Answer 2

lithosphere, asthenosphere, mesosphere, inner core, outer core

Question 3

Mafic rocks

Answer 3

rich in magnesium and iron, oceanic crust

Question 4

Felsic rocks

Answer 4

rich in silica, oxygen, aluminum, often continental crust

Question 5

Ocean Crust Structure

Answer 5

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

Question 6

Ophiolites

Answer 6

Piece of oceanic crust obducted onto continental crust