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Chapter 7

Chapter Test

Chapter Test

Select the most appropriate response for each of the following questions.


This activity contains 32 questions.

	Metamorphism literally means to "change form."    True  False

	Which of the following is an agent of metamorphism?   electromagnetism heat chemically active fluids all of the above only heat and chemically active fluids

	The agents of metamorphism include heat, pressure, and chemically active fluids.    True  False

	Most metamorphism takes place __________.   at Earth's surface only at a significant depth below the surface in young sediments in Earth's core where a rock is subjected to conditions unlike those in which it formed

	Contact, or thermal, metamorphism occurs in association with igneous intrusions.    True  False

	What type of stress is illustrated in the following figure?   slaty cleavage tensional shear compressional folding

	Hydrothermal solutions are responsible for producing large-scale regional metamorphism.    True  False

	A zone of alteration that often surrounds an emplaced magma is called a(n) __________.   regional emplacement facies thermal zone hornfels alteration none of the above

	The most important agent of metamorphism is heat.    True  False

	The force exerted on a buried rock by the weight of material above is called __________.   shear stress differential stress tensional stress confining pressure geothermal gradient

	During extreme metamorphism, the transformation may be so complete that the parent rock cannot be determined.    True  False

	__________ solutions are ion-rich fluids associated with large magma bodies that eventually may form a variety of economically important mineral deposits.   Magma Ore Hydrothermal Heavy None of the above

	The parent rock of a marble is __________.   shale limestone granite slate sandstone

	Which of these is not a common type of schist?   kyanite schist mica schist garnet schist olivine schist

	Using the material provided in these Georgia Perimeter College class notes, what is the approximate temperature and depth of formation of most slate?   100 degrees C, 20 kilometers 200 degrees C, 10 kilometers 500 degrees C, 2 kilometers 800 degrees C, 400 kilometers 1000 degrees C, 100 kilometers

	According to the information at the site referenced in Question 15, the largest skarns are of what type?   W-skarns Au-skarns Mo-skarns Fe-skarns none of the above

	Examine the information on skarns at this Washington State University site. What two minerals are most commonly present in a skarn?   plagioclase and pyroxene garnet and pyroxene calcite and olivine plagioclase and garnet none of the above

	According to the information in the site referenced in Question 17, the parent rock of "soapstone" (talc/chlorite) is __________.   peridotite sandstone granite limestone basalt

	According to the skarn Web page in Question 17, a skarn is a __________ metamorphic deposit.   contact regional fault-related all of the above none of the above

	When rocks exhibit ductile behavior, their mineral grains tend to flatten and elongate when subjected to differential stress.    True  False

	When shale is subjected to low-grade metamorphism, its minerals align themselves and the metamorphic rock __________ is formed.   quartzite marble slate gneiss amphibolite

	Mineral alignment in a metamorphic rock usually gives the rock a foliated texture.    True  False

	Following high-grade metamorphism, the segregation of minerals into separate bands is referred to as __________.   schistocity slaty cleavage rock cleavage preferred orientation gneissic texture

	When subjected to pressure, metamorphosed rocks often exhibit a layered or banded texture called __________.   foliation slating bedding facies none of the above

	Most regional metamorphism occurs __________.   in areas of active mountain building in the lower mantle around magmatic intrusions around volcanoes on the seafloor

	Listed in order of increasing metamorphic grade, a shale could be metamorphosed into __________.   gneiss-schist-phyllite-slate schist-phyllite-slate-gneiss gneiss-phyllite-slate-schist slate-schist-gneiss-phyllite slate-phyllite-schist-gneiss

	One type of metamorphic rocks that form in fault zones are termed __________.   fault breccias mylonites conglomerates migmatites none of the above

	The various types of foliation depend upon the grade of metamorphism and the mineralogy of the parent rock.    True  False

	Which of the following minerals is most associated with high-grade metamorphism?   biotite garnet muscovite sillimanite chlorite

	Migmatites serve to illustrate the fact that some rocks are transitional and do not clearly belong to any one of the three basic rock groups.    True  False

	Regional metamorphism produces the greatest volume of metamorphic rock.    True  False

	A migmatite is a __________.   low-grade metamorphic rock containing garnet rock that has been metamorphosed to such high degrees that it has partially melted metamorphic rock that forms from sandstone type of meteorite that has undergone metamorphism none of the above

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