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