8: metamorphism and metamorphic rocks

Question 1

rocks subjected to elevated temperatures and pressures can change form into

Answer 1

metamorphic rocks

Question 2

what describe the intensity of metamorphosis

Answer 2

metamorphic grade

Question 3

heat, pressure, differential stress, and chemically active fluid are four agents that drive

Answer 3

metamorphic reactions

Question 4

tectonic forces that cause greater stress in one direction than another

Answer 4

differential stress

Question 5

the planar arrangement of mineral grains

Answer 5

foliation

Question 6

slaty, cleavage, schistosity, gniessic banding

Answer 6

varieties of foliation

Question 7

metamorphic rocks without foliation

Answer 7

non foliated

Question 8

unusually large crystals that form in an otherwise finer grained metamorphic rock

Answer 8

porphyroblasts

Question 9

slate, phyllite, schist, gneiss

Answer 9

common foliated metamorphic rocks

Question 10

quartzite, marble, hornfels

Answer 10

common non foliated metamorphic rocks

Question 11

occurs in the earths upper crust when heat from a molten igneous body bakes the surrounding rocks

Answer 11

contact metamorphism

Question 12

the name of the zone where an igneous rock has baked the surrounding rocks

Answer 12

aureole

Question 13

occurs when hot, iron rich water circulates the pore spaces or fractures in a rock

Answer 13

hydrothermal metamorphism

Question 14

when rocks are buried beneath overlying rock and are subjected to confining pressure and elevated temperatures

Answer 14

burial metamorphism

Question 15

what increases with higher levels of metamorphism?

Answer 15

the rocks grain size