Igneous Rocks and Processes

Notes and Comments

• One aspect to pay attention to in your reading are the various types of igneous intrusions: sills, dikes, etc. (the section on "Intrusive Bodies").
• CH 3 (Igneous Rocks) and CH 4 (Volcanism) go together, so don't view them as being distinct. It is just separated because the focus on volcanoes themselves is a large topic.

Helping yourself study

• What would you list as the main themes in CH 3 from:

  • The textbook reading
  • From class

• Can you identify the igneous rocks granite, rhyolite, diorite, andesite, gabbro, basalt?

  • Where do we find each of these rocks being formed?
  • What are their textures?
  • Are they mafic, intermediate, or felsic?
  • What is the rough makeup of these rocks in terms of both which minerals are present, and how much (a little, a lot, etc. - looking for the trends, not exact percentages).

• Have you tried the questions at the end of the chapter readings?

• Make a multiple-choice quiz for your neighbor ...

• Make a written quiz for your neighbor ...

You should pursue similar actions for CH 4, and beyond!