Earth Science Short answers

timer Asked: Dec 7th, 2018

Question description

Please answer each question in about 3-5 sentence

Igneous Rocks

  • 1) Is it likely that you can pick up an igneous rock and find crystals of olivine and muscovite in it together? Why or why not?
  • 2) Is it possible for all rocks that cool at a slow rate to have quartz in them? Why or why not?
  • 3) Describe the cooling history of a rock that has a fine-grained texture, including where it likely crystallized?
  • 4) Why is plagioclase different from amphibole even though they form at the same temperature?
  • 5) Figures in chapter 6 of your lecture text show several igneous structures. Briefly describe how an igneous dike is different form an igneous sill. In your answer, use the formal terms for orientation of each.
  • 6) Chapter 6 describes igneous fissure eruptions; briefly describe the most common rock type they produce and list two places they found on Earth.

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