Use this sample examination to test your knowledge of concepts learned from Chapter 7 - AND TURN DOWN THE MUSIC!
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| 1 | |
Foliation is:
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| | A) | layering observed in sedimentary rocks |
| | B) | alignment of any kind observed in any kind of rocks |
| | C) | an alignment of mineral grains in a metamorphic rock |
| | D) | layering of igneous rocks |
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| 2 | |
Foliated metamorphic rocks are never:
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| | A) | foliated |
| | B) | high-grade |
| | C) | caused by contact with magma |
| | D) | low grade |
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| 3 | |
Shearing is a type of:
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| | A) | compressive stress |
| | B) | lithostatic pressure |
| | C) | differential stress |
| | D) | confining pressure |
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| 4 | |
Metamorphic rocks with a planar texture (minerals are aligned within the rock) are:
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| | A) | striated |
| | B) | layered |
| | C) | foliated |
| | D) | concordant |
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| 5 | |
Metamorphic rocks are classified primarily according to:
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| | A) | texture - the presence/absence of foliation |
| | B) | chemical composition |
| | C) | environment of deposition |
| | D) | hardness |
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| 6 | |
Which of the following is a non-foliated metamorphic rock?
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| | A) | gneiss |
| | B) | slate |
| | C) | quartzite |
| | D) | phyllite |
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| 7 | |
The major difference between metamorphism and metasomatism is:
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| | A) | the temperature at which each occurs |
| | B) | the minerals that are affected |
| | C) | the area or region involved |
| | D) | metasomatism is metamorphism with the introduction of additional ions from an external source |
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| 8 | |
Ore bodies at divergent plate margins can be formed by:
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| | A) | contact metamorphism |
| | B) | regional metamorphism |
| | C) | hydrothermal processes |
| | D) | none of these |
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| 9 | |
Metamorphic rocks with the same mineral assemblage belong to the same:
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| | A) | metamorphic facies |
| | B) | metamorphic rock |
| | C) | metamorphic history |
| | D) | all of these |
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| 10 | |
A metamorphic rock that has undergone partial melting to produce a hybrid metamorphic-igneous rock is called:
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| | A) | gneiss |
| | B) | hornfels |
| | C) | migmatite |
| | D) | schist |
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| 11 | |
Which of the following lists is arranged in order from highest to lowest grade of metamorphic rock?
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| | A) | gneiss, slate, schist, phyllite |
| | B) | gneiss, schist, phyllite, slate |
| | C) | slate, gneiss, phyllite, schist |
| | D) | slate, phyllite, schist, gneiss |
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| 12 | |
Regional metamorphism is associated with:
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| | A) | divergent plate boundaries |
| | B) | transform plate boundaries |
| | C) | convergent plate boundaries |
| | D) | all plate boundaries |
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| 13 | |
The generally accepted temperature limits for metamorphism are:
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| | A) | metamorphism occurs at all temperatures |
| | B) | there are no temperature limits to metamorphism because it is a continuum |
| | C) | metamorphism is limited by pressure, not temperature |
| | D) | 200 degrees Celsius to rock melting |
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| 14 | |
The principal agents of metamorphism are:
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| | A) | heat and pressure |
| | B) | heat and magma |
| | C) | confining pressure and directed stress |
| | D) | Sean Connery and Roger Moore |
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| 15 | |
When rocks are metamorphosed, the mineral components of the rock are:
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| | A) | transformed in the solid state |
| | B) | melted first, then crystallized again to form a new rock |
| | C) | shattered by mechanical processes |
| | D) | ugly first, then beautiful |
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| 16 | |
Contact metamorphism results whenever:
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| | A) | rocks are buried deeply beneath the crust |
| | B) | an earthquake occurs |
| | C) | lithospheric plates are in contact |
| | D) | magma is in contact with other rocks |
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| 17 | |
Regional metamorphism:
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| | A) | produces metamorphic rocks over large areas |
| | B) | produces foliated metamorphic rocks |
| | C) | is occurring as you read this question |
| | D) | all of these |
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| 18 | |
Slate is a metamorphic rock type associated with:
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| | A) | low temperature, high pressure conditions |
| | B) | low pressure, high temperature conditions |
| | C) | low pressure, low temperature conditions |
| | D) | high pressure, high temperature conditions |
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| 19 | |
Gneiss is a metamorphic rock associated with:
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| | A) | high temperature, high pressuer conditions |
| | B) | high temperature, low pressure conditions |
| | C) | low temperature, low pressure conditions |
| | D) | low temperature, high pressure conditions |
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| 20 | |
Metamorphism of limestone may contribute to global warming by the release of:
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| | A) | oxygen |
| | B) | sulfuric acid |
| | C) | carbon dioxide |
| | D) | nitrous oxide |
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