Question 1

Which is a foliated, fine- grained regional metamorphic rock formed from mudstone and shale?

Accepted Answer

A)  hornfels 
B)  gneiss 
C)  marble 
D)  phyllite 
A)  hornfels 
B)  gneiss 
C)  marble 
D)  phyllite

Question 2

Which facies would you expect to find with high temperature- low pressure contact metamorphism?

Accepted Answer

A)  granulite 
B)  hornfels 
C)  amphibolite 
D)  blueschist 
A)  granulite 
B)  hornfels 
C)  amphibolite 
D)  blueschist

Question 3

During metamorphism, what is the major effect of chemically active fluids like water and carbon dioxide?

Accepted Answer

A)  aid in the movement of dissolved ions and silicate constituents from parent minerals and facilitate growth of new metamorphic mineral grains 
B)  facilitate the formation of schistosity and gneissic banding in hornfels and skarns 
C)  increase the pressures in deeply buried, regional- metamorphic zones 
D)  prevent partial melting so solid rocks can undergo very high temperature regional metamorphism 
A)  aid in the movement of dissolved ions and silicate constituents from parent minerals and facilitate growth of new metamorphic mineral grains 
B)  facilitate the formation of schistosity and gneissic banding in hornfels and skarns 
C)  increase the pressures in deeply buried, regional- metamorphic zones 
D)  prevent partial melting so solid rocks can undergo very high temperature regional metamorphism

Question 4

What term describes the zone of contact metamorphism where hornfels forms, surrounding an intrusive magma body?

Accepted Answer

A)  aureole 
B)  astrobleme 
C)  hydrothermal vein 
D)  oracle 
A)  aureole 
B)  astrobleme 
C)  hydrothermal vein 
D)  oracle

Question 5

Which regional metamorphic rock type listed below represents the highest grade?

Accepted Answer

A)  phyllite 
B)  mica schist 
C)  slate 
D)  hornfels 
A)  phyllite 
B)  mica schist 
C)  slate 
D)  hornfels

Question 6

Which of the following lists the rocks in the order of increasing grain size and increasing grade for regionally metamorphosed mud rocks?

Accepted Answer

A)  slate, schist, phyllite 
B)  schist, slate, phyllite 
C)  phyllite, slate, schist 
D)  slate, phyllite, schist 
A)  slate, schist, phyllite 
B)  schist, slate, phyllite 
C)  phyllite, slate, schist 
D)  slate, phyllite, schist

Question 7

Which of the following rocks would exhibit visible, textural evidence of having undergone significant partial melting?

Accepted Answer

A)  coarse grained angular fault breccias 
B)  migmatites 
C)  porphyroblastic hornfels 
D)  marbles 
A)  coarse grained angular fault breccias 
B)  migmatites 
C)  porphyroblastic hornfels 
D)  marbles

Question 8

Which of the following forms at a medium grade of regional metamorphism?

Accepted Answer

A)  hornfels 
B)  phyllite 
C)  slate 
D)  schist 
A)  hornfels 
B)  phyllite 
C)  slate 
D)  schist

Question 9

In which setting would regional metamorphism most likely occur?

Accepted Answer

A)  on the rims of large meteorite impact craters 
B)  at shallow depths below an oceanic ridge or rift zone 
C)  at shallow depths along major transform faults on the continental crust 
D)  at great depths in the crust where two continents are colliding 
A)  on the rims of large meteorite impact craters 
B)  at shallow depths below an oceanic ridge or rift zone 
C)  at shallow depths along major transform faults on the continental crust 
D)  at great depths in the crust where two continents are colliding

Question 10

A large block of sedimentary rock that has fallen into the top of a magma chamber and become metamorphosed is called_____ .

Accepted Answer

A)  a roof pendant 
B)  an amphibolite boudin 
C)  an astrobleme 
D)  an inverted aureole 
A)  a roof pendant 
B)  an amphibolite boudin 
C)  an astrobleme 
D)  an inverted aureole

Question 11

Where would you expect to find chlorite and zeolites filling up voids and fractures in relatively undeformed rocks?

Accepted Answer

A)  high grade metamorphism of layered sandstones and shales 
B)  high temperature hornfels contact metamorphism of salts and rock gypsum 
C)  intermediate grade metamorphism of limestones 
D)  burial metamorphism of sedimentary or volcanic rocks 
A)  high grade metamorphism of layered sandstones and shales 
B)  high temperature hornfels contact metamorphism of salts and rock gypsum 
C)  intermediate grade metamorphism of limestones 
D)  burial metamorphism of sedimentary or volcanic rocks

Question 12

Where and how does metamorphism occur?

Accepted Answer

A)  mainly at low temperatures in the roots of volcanic mountain belts 
B)  wherever solid rocks are subjected to new conditions of temperature, pressure, strain, and a change in their constituent fluids 
C)  in response to sudden catastrophic geologic changes, mostly in the Precambrian. 
D)  beneath the thick accumulations of in sedimentary basins 
A)  mainly at low temperatures in the roots of volcanic mountain belts 
B)  wherever solid rocks are subjected to new conditions of temperature, pressure, strain, and a change in their constituent fluids 
C)  in response to sudden catastrophic geologic changes, mostly in the Precambrian. 
D)  beneath the thick accumulations of in sedimentary basins

Question 13

What is the facies name for the unique high pressure- low temperature hydrous metamorphism seen on top of subducting oceanic crust?

Accepted Answer

blueschist, for the

Question 14

A massive mudstone metamorphosed to biotite hornfels facies would have ________.

Accepted Answer

A)  irregular spots of randomly oriented biotite platelets called porphyroblasts 
B)  biotite defining wavy parallel foliations throughout the rock 
C)  remnants of biotite, now mostly recrystallized to garnet in discreet layers 
D)  breccia of angular biotite clasts crushed and sheared out of shape 
A)  irregular spots of randomly oriented biotite platelets called porphyroblasts 
B)  biotite defining wavy parallel foliations throughout the rock 
C)  remnants of biotite, now mostly recrystallized to garnet in discreet layers 
D)  breccia of angular biotite clasts crushed and sheared out of shape

Question 15

Which low- grade metamorphic rock, composed of extremely fine mica and other mineral grains, typically exhibits well- developed rock cleavage?

Accepted Answer

A)  quartzite 
B)  schist 
C)  slate 
D)  hornfels 
A)  quartzite 
B)  schist 
C)  slate 
D)  hornfels

Question 16

What is the end product (highest grade) reached by subduction zone metamorphism of basalt?

Accepted Answer

A)  granulite 
B)  gneiss 
C)  eclogite 
D)  gabbro pegmatite 
A)  granulite 
B)  gneiss 
C)  eclogite 
D)  gabbro pegmatite

Question 17

What foliated, regional metamorphic rock is texturally intermediate between slate and schist?

Accepted Answer

A)  fault breccia 
B)  quartzite 
C)  gneiss 
D)  phyllite 
A)  fault breccia 
B)  quartzite 
C)  gneiss 
D)  phyllite

Question 18

Which facies would you expect to find with the development of glaucophane at high pressure?

Accepted Answer

A)  granulite 
B)  hornfels 
C)  blueschist 
D)  amphibolite 
A)  granulite 
B)  hornfels 
C)  blueschist 
D)  amphibolite

Question 19

Amphibolite is a foliated metamorphic rock composed principally of hornblende and plagioclase. How does it form?

Accepted Answer

A)  by contact metamorphism of quartzose sandstone cut by a granitic batholith 
B)  by gouging and crushing of limestone along a fault 
C)  by regional metamorphism of volcanic rocks such as andesite and basalt 
D)  by the impact of an asteroid on interbedded sandstone and shale 
A)  by contact metamorphism of quartzose sandstone cut by a granitic batholith 
B)  by gouging and crushing of limestone along a fault 
C)  by regional metamorphism of volcanic rocks such as andesite and basalt 
D)  by the impact of an asteroid on interbedded sandstone and shale

Question 20

How would you correctly refer to the metamorphic grade of a rock that contains abundant chlorite as its highest temperature mineral such as a greenschist or phyllite?

Accepted Answer

A)  intermediate grade 
B)  low grade  600° C 
D)  "C grade" 
A)  intermediate grade 
B)  low grade  600° C 
D)  "C grade"

Which is a foliated, fine- grained regional metamorphic rock formed from mudstone and shale?

Which facies would you expect to find with high temperature- low pressure contact metamorphism?

During metamorphism, what is the major effect of chemically active fluids like water and carbon dioxide?

What term describes the zone of contact metamorphism where hornfels forms, surrounding an intrusive magma body?

Which regional metamorphic rock type listed below represents the highest grade?

Which of the following lists the rocks in the order of increasing grain size and increasing grade for regionally metamorphosed mud rocks?

Which of the following rocks would exhibit visible, textural evidence of having undergone significant partial melting?

Which of the following forms at a medium grade of regional metamorphism?

In which setting would regional metamorphism most likely occur?

A large block of sedimentary rock that has fallen into the top of a magma chamber and become metamorphosed is called_____ .

Where would you expect to find chlorite and zeolites filling up voids and fractures in relatively undeformed rocks?

Where and how does metamorphism occur?

What is the facies name for the unique high pressure- low temperature hydrous metamorphism seen on top of subducting oceanic crust?

A massive mudstone metamorphosed to biotite hornfels facies would have ________.

Which low- grade metamorphic rock, composed of extremely fine mica and other mineral grains, typically exhibits well- developed rock cleavage?

What is the end product (highest grade) reached by subduction zone metamorphism of basalt?

What foliated, regional metamorphic rock is texturally intermediate between slate and schist?

Which facies would you expect to find with the development of glaucophane at high pressure?

Amphibolite is a foliated metamorphic rock composed principally of hornblende and plagioclase. How does it form?

How would you correctly refer to the metamorphic grade of a rock that contains abundant chlorite as its highest temperature mineral such as a greenschist or phyllite?

An Introduction to Geology and Plate Tectonics

Minerals: the Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earths Interior

The Ocean Floor

Plate Tectonics: the Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: the Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Shorelines

Mineral and Energy Resources

Filters

Exam 18: Deserts and Winds

Which is a foliated, fine- grained regional metamorphic rock formed from mudstone and shale?

Which facies would you expect to find with high temperature- low pressure contact metamorphism?

During metamorphism, what is the major effect of chemically active fluids like water and carbon dioxide?

What term describes the zone of contact metamorphism where hornfels forms, surrounding an intrusive magma body?

Which regional metamorphic rock type listed below represents the highest grade?

Which of the following lists the rocks in the order of increasing grain size and increasing grade for regionally metamorphosed mud rocks?

Which of the following rocks would exhibit visible, textural evidence of having undergone significant partial melting?

Which of the following forms at a medium grade of regional metamorphism?

In which setting would regional metamorphism most likely occur?

A large block of sedimentary rock that has fallen into the top of a magma chamber and become metamorphosed is called_____ .

Where would you expect to find chlorite and zeolites filling up voids and fractures in relatively undeformed rocks?

Where and how does metamorphism occur?

What is the facies name for the unique high pressure- low temperature hydrous metamorphism seen on top of subducting oceanic crust?

A massive mudstone metamorphosed to biotite hornfels facies would have ________.

Which low- grade metamorphic rock, composed of extremely fine mica and other mineral grains, typically exhibits well- developed rock cleavage?

What is the end product (highest grade) reached by subduction zone metamorphism of basalt?

What foliated, regional metamorphic rock is texturally intermediate between slate and schist?

Which facies would you expect to find with the development of glaucophane at high pressure?

Amphibolite is a foliated metamorphic rock composed principally of hornblende and plagioclase. How does it form?

How would you correctly refer to the metamorphic grade of a rock that contains abundant chlorite as its highest temperature mineral such as a greenschist or phyllite?

An Introduction to Geology and Plate Tectonics

Minerals: the Building Blocks of Rocks

Igneous Rocks

Volcanoes and Volcanic Processes

Weathering and Soil

Sedimentary Rocks

Metamorphism and Metamorphic Rocks

Geologic Time

Crustal Deformation

Earthquakes and Earths Interior

The Ocean Floor

Plate Tectonics: the Framework for Modern Geology

Mountain Building and Continental Frameworks

Mass Wasting: the Work of Gravity

Running Water

Groundwater

Glaciers and Glaciation

Shorelines

Mineral and Energy Resources

Filters