In regional metamorphism the source of increased temperature and
pressure is _________ .
a local intrusive heat source
the increase in temperature with increasing depth of burial
due to increased rate of radioactive decay
A Geologist suffers from a black eye after yelling "Gneiss!!!" to a
classmate, who happened to be sunning on a large boulder. The
geologist really meant to tell the classmate that the rock they were
laying on _______________ .
would fizz with the application of acid
is commonly used in billiard table construction
is a high-grade, silicate-rich, mineralogically banded metamorphic rock
A combination of shallow earthquakes, tension, and contact
metamorphism characterizes ___________ .
transform fault margins
subduction type margins
In contact metamorphism there is a ____________ .
local heat source
frictional heat source
regional heat source
Within a 50 mile traverse you walk from a shale into a slate into a phyllite. You are walking in the direction of _________ .
increasing metamorphic grade
decreasing metamorphic grade
increasing degree of contact metamorphism
Marble is a metamorphic rock that forms from a ___________ parent .
The pressure and heat that drive metamorphism result from which three forces?
The internal heat of the Earth, the weight of overlying rocks, and horizontal pressures developed as rocks become deformed
The weight of the overlying rocks, solar heating, and nuclear fusion
Horizontal pressures developed as rocks deform, bonding, heat released during crystallization
Internal heat of the Earth, nuclear fission, heat released during chemical weathering
A geothermometer is?
a device that measures temperature in deep drill holes
a device that measures current rock temperatures at the surface
a mineral assemblage that can reveal the minimum temperature attained during heating
the range of temperatures experienced by a rock during its geologic history
Which type of pressure will result in the alignment of metamorphic minerals?
During metamorphism, changes in the bulk composition of a rock occur primarily as a result of __________?
increases in pressure
increases in temperature
reaction with hydrothermal fluids
all of these
What type of metamorphism is caused by high temperature and high pressure imposed over a large volume of crust?
A rock that has undergone cataclastic metamorphism would most likely display which of the following?
preserved sedimentary layering
pulverized rock fragments
large olivine crystals
What is the most prominent textural feature of regional metamorphic rocks??:
Which of the following statements about metamorphism of a shale is false?
with increasing metamorphism, the clay minerals breakdown to form micas
with increasing metamorphism, the grain size of the minerals gets smaller
with increasing metamorphism, foliation develops
with increasing metamorphism, the amount of water decreases
Which mineral is responsible for the strong foliation in a schist?
Which of the following metamorphic rocks can not form from a shale?
Which of the following metamorphic rocks is not paired with its true parent rock?
quartzite - quartz arenite
schist - shale
hornfels - dolomite
Which of the following index minerals forms at the highest metamorphic grade?
Which of the following processes will cause metamorphism?
a change in the chemical environment
an increase in temperature
an increase in pressure
all of these
What is the pressure on a rock at 15 kilometers depth?
about 5 times atmospheric pressure
about 50 times atmospheric pressure
about 500 times atmospheric pressure
about 5000 times atmospheric
______ is the process where rocks previously metamorphosed under high-grade conditions are later metamorphosed under low-grade conditions.
Metasomatism is ________.
the change in the bulk composition of a rock during metamorphism
metamorphism caused by nearby intrusions
metamorphism caused by tectonic movements along faults
the parallel alignment of minerals in a metamorphic rock
Hydrothermal metamorphism is very common in which of the following settings?
at continental collision zones
along shallow faults
at mid-ocean ridges
in mid-continental regions
Metamorphism occurs ______.
adjacent to igneous intrusions
in subduction zones
in all of these settings
In which of the following metamorphic environments would you expect to find bedding and other sedimentary structures to be preserved.
The parallel alignment of mica in a metamorphic rock is an example of ______.
What is the relationship between metamorphic foliation and sedimentary bedding?
sedimentary bedding is required in order for a rock to develop metamorphic foliation
sedimentary bedding and metamorphic foliation are two terms for the same phenomenon
sedimentary bedding and metamorphic foliation are generally parallel
there is no regular relationship between sedimentary bedding and metamorphic foliation
Which of the following is not used to classify foliated rocks?
the texture of the parent rock
the degree to which minerals are segregated into lighter and darker bands
the metamorphic grade
Which of the following sets is arranged in order of increasing metamorphic grade?
shale - slate - phyllite
phyllite - gneiss - schist
phyllite - slate - schist
schist - shale - gneiss
Which of the following rocks represents the highest metamorphic grade?
Metamorphic rocks with segregated light and dark minerals are called _______.
During metamorphism a quartz arenite will change into what type of rock?
A normal geothermal gradient is approximately _________ .
3000 degrees C per km
300 degrees C per km
30 degrees C per km
3 degrees C per km
Which of the following metamorphic rocks forms in the forearc of a subduction zone?
Which of the following rocks can be considered gradational between an igneous rock and a metamorphic rock?
For the Barrovian sequence given above intensity of metamorphism:
increases from left to right
increases from right to left
cannot be determined from the diagram
In the figure above, the A isograd is the ________ isograd
In the figure above, what mineral would not be present in zone B?
In the figure above, the C isograd is the _________ isograd
In the figure above, zone D should contain which of the following minerals?
A rock rich in garnet and pyroxene that forms at extremely high pressures and moderate to high temperatures is called a(n) _________ .
The zeolite facies occurs in which pressure-temperature regime?
The eclogite facies occurs in which pressure-temperature regime?
The greenschist facies occurs in which pressure-temperature regime?