1 phaneritic 2 porhyritic 3 aphanitic 4 glassy 5 pyroclastic 6 pegmatitic An

1 phaneritic 2 porhyritic 3 aphanitic 4 glassy 5

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1. phaneritic 2. porhyritic 3. aphanitic 4. glassy 5. pyroclastic 6. pegmatitic
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An igneous rock made of volcanic ash that erupted explosively from a volcano has what kind of texture? 1. phaneritic 2. porhyritic 3. aphanitic 4. glassy 5. pyroclastic 6. pegmatitic
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List the three volcanic rock types in order from most felsic to most mafic Rhyolite Andesite basalt List the four plutonic rocks in order from most felsic to most mafic granite diorite gabbro peridotite
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9. Which volcanic rock has the same composition as granite? 1. andesite 2. basalt 3. rhyolite 4. diorite
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10. Which plutonic rock has the same composition as andesite? 1. granite 2. diorite 3. gabbro 4. peridotite
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11. Gabbro is 1. A volcanic rock with the same composition as diorite 2. A volcanic rock with the same composition as basalt 3. A plutonic rock with the same composition as rhyolite 4. A plutonic rock with the same composition as basalt
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12. List common silicate minerals in the order in which the crystallize in a cooling magma body 1. Quartz, orthoclase, biotite, amphibole, pyroxene, olivine 2. Quartz, biotite, orthoclase, pyroxene, amphibole, olivine 3. Olivine, pyroxene, amphibole, biotite, orthoclase, quartz 4. Olivine, amphibole, biotite, orthoclase, pyroxene, quartz
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16. What type of magma is generated at divergent plate boundaries? 1. Granitic (felsic) 2. Dioritic (intermediate) 3. Basaltic (mafic) 4. Peridotitic (ultramafic)
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Chapter 6 Volcanism
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1. Most volcanism happens at 1. Transform and convergent plate boundaries 2. Divergent and convergent plate boundaries 3. Divergent and transform plate boundaries 4. In the middle of tectonic plates
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2. Magma that is more viscous 1. Flows more easily 2. Flows less easily 3. Evaporates more easily 4. Evaporates less easily
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3. Rhyolitic magma 1. Erupts more explosively than basaltic magma, because rhyolitic magma is more viscous 2. Erupts more gently than basaltic magma because rhyolitic magma is more viscous 3. Erupts more explosively than basaltic magma, because rhyolitic magma is less viscous 4. Erupts more gently than basaltic magma because rhyolitic magma is less viscous
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4. The greatest volcanic hazard exists at 1. Transform plate boundaries 2. Convergent plate boundaries 3. Divergent plate boundaries 4. In the middle of tectonic plates
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1. Most volcanism happens at 1. Transform and convergent plate boundaries 2. Divergent and convergent plate boundaries 3. Divergent and transform plate boundaries 4. In the middle of tectonic plates
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2. Magma that is more viscous 1. Flows more easily 2. Flows less easily 3. Evaporates more easily 4. Evaporates less easily
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3. Rhyolitic magma 1. Erupts more explosively than basaltic magma, because rhyolitic magma is more viscous 2. Erupts more gently than basaltic magma because rhyolitic magma is more viscous 3. Erupts more explosively than basaltic magma, because rhyolitic magma is less viscous 4. Erupts more gently than basaltic magma because rhyolitic magma is less viscous
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4. The greatest volcanic hazard exists at 1. Transform plate boundaries 2. Convergent plate boundaries 3. Divergent plate boundaries 4. In the middle of tectonic plates
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Chapter 7 Sedimentary rocks
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1. A sedimentary rock with large, angular clasts is called A. siltstone B. conglomerate C. sandstone D. breccia E. shale F. limestone
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2. Rock type = ______________________
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  • Spring '14
  • Kaiser
  • Plate Tectonics, Basalt, Sedimentary Rock Interpretation, c. Convergent

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