Geo Exam 2. - Metamorphic Rocks

Which location on this diagram would most likely record metamorphism along a subduction zone?

3

The foliation shown in a gneiss is

a dark and light color banding

Which of the following does NOT match a sedimentary rock with a possible metamorphic equivalent?

all of these are correct matches

Which of the following does NOT help define foliation in metamorphic rocks?

all of these: an orientation of mica, light- and dark-colored bands, rock cleavage, elongated crystals

Foliated metamorphic rocks are always

caused by a directed pressure

Which of the following causes a foliation in a metamorphic rock?

differential pressure

Which of the following rocks represents the highest metamorphic grade?

gneiss

Which of the following lists is arranged in order from highest to lowest grade of metamorphic rock?

gneiss, schist, phyllite, slate

In what environments does high pressure/low temperature metamorphism occur?

in a subduction zone

What is the source of heat during contact metamorphism?

magma

Which mineral is responsible for the strong foliation in a schist?

mica

Which of the following matches a sedimentary rock with a possible metamorphic equivalent?

shale-slate

Which of the following rocks represents the lowest metamorphic grade?

slate

Which of the following lists is arranged in order from lowest to highest grade of metamorphic rock?

slate, phyllite, schist, gneiss

Which of the following metamorphic rocks is not paired with its true parent rock?

slate-basalt

In regional metamorphism the source of increased temperature and pressure is _________ .

the increase in temperature with increasing depth of burial and compression