Igneous Rocks and Intrusive Activity Quiz
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Questions and Answers

What are the three major components of magma?

  • Crust, mantle, core
  • Silica, oxygen, iron (correct)
  • Magma, lava, rock
  • Felsic, intermediate, mafic

    • Which are the four basic igneous compositions?

  • Lava, ash, cinder, scoria
  • Felsic, intermediate, mafic, ultramafic (correct)
  • Volcanic, plutonic, pyroclastic, tuff
  • Granite, basalt, obsidian, pumice

    • What are the six major igneous textures?

  • Granular, smooth, rough, shiny, glassy, porous
  • Coarse, fine, medium, crystalline, amorphous, fibrous
  • Phaneritic, aphanitic, porphyritic, glassy, vesicular, pyroclastic (correct)
  • Pegmatitic, seriate, equigranular, hypidiomorphic, xenomorphic, poikilitic

    • How can magmatic differentiation generate a magma body with different mineralogy from its parent magma?

    <p>Through fractional crystallization</p> Signup and view all the answers

    What can generate a basaltic (mafic) magma through partial melting of the mantle rock peridotite?

    <p>Partial melting of mantle rock peridotite</p> Signup and view all the answers

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