CroninProjects.org/ Vince/ Course/ PhysGeol/Geo1405-IgRox-F20.html

Mount Hood in northern Oregon is an active stratovolcano just east of Portland, formed because of the subduction of the Juan de Fuca Plate under the North American Plate. Photo by Vince Cronin.


Igneous Rocks and Volcanoes

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Assignment

  1. Read the study questions for this topic, listed at https://croninprojects.org/Vince/Course/PhysGeol/Geo1405-IgRox-Q2020.html and keep them in mind as you read the following assignments. Most, if not all, of the answers will be in the reading assignments for this topic.
  2. View the pre-lab video Igneous Rocks and Processes at https://goo.gl/EIzuX1
  3. View the the pronunciation guide to AGI/NAGT Lab Manual chapter 5 at https://youtu.be/mU8EPdMutBE
  4. View five short videos by Dave McConnell and friends —
    How To Melt Rocks,
    Partial Melting of Igneous Rocks,
    Magma Viscosity, Gas Content, and Milkshakes,
    How to Classify Volcanoes, and
    Naming Igneous Rocks.
  5. Scan: Earth, chapter 4, Igneous Rocks and Intrusive Activity
  6. Scan: AGI/NAGT Lab Manual, chapter 5, Section Introduction, Pages 117-120.
  7. Read: Earth, chapter 4, section 4.1 Magma: Parent Material of Igneous Rock
  8. Read: Earth, chapter 4, section 4.3 Igneous Textures: What Can They Tell Us?
  9. Read: AGI/NAGT Lab Manual, chapter 5, Section Classifying Igneous Rocks from the beginning through Subsection Textures of Igneous Rocks, Pages 120-123.
  10. Do: AGI/NAGT Lab Manual, Activity 5.1 Igneous Textures, page 135, and submit it to the Igneous Rocks assignment in your lab section's Canvas space — submission instructions HERE .
  11. Read: Earth, chapter 4, section 4.2 Igneous Compositions
  12. Read: AGI/NAGT Lab Manual, chapter 5, Section Classifying Igneous Rocks, Subsection Mineral Composition of Common Igneous Rocks, Pages 123-126.
  13. Do: AGI/NAGT Lab Manual, Activity 5.4 Minerals That Form Igneous Rock, page 138, and submit it to the Igneous Rocks assignment in your lab section's Canvas space — submission instructions HERE .
    All of the eight minerals in Activity 5.4 have tiny videos that are relevant to them, and that might be helpful to you. They are as follows:
    specimen 1: unknown_5583_vc
    specimen 2: unknown_4636_vc
    specimen 3: unknown_3049_vc
    specimen 4: unknown_4370_vc
    specimen 5: unknown_4428_vc
    specimen 6: unknown_6945_vc
    specimen 7: unknown_7364_vc
    specimen 8: unknown_3275_vc
  14. Read: AGI/NAGT Lab Manual, chapter 5, Section Classifying Igneous Rocks, Subsections Color Index for Mafic Minerals and Estimating Mineral Percentage in Rock, only the parts on page 126.
  15. Do: AGI/NAGT Lab Manual, Activity 5.5 Estimate the Percentage of Mafic Minerals, page 139, and submit it to the Igneous Rocks assignment in your lab section's Canvas space — submission instructions HERE .
  16. Read: Earth, chapter 4, section 4.4 Naming Igneous Rocks
  17. Read: AGI/NAGT Lab Manual, chapter 5, Section Classifying Igneous Rocks, Subsections Common Igneous Rock Types and Field Identification of Some Common Igneous Rocks, pages 127-132, including all figures and tables.
  18. Do: AGI/NAGT Lab Manual, Activity 5.7 Analysis and Interpretation of Igneous Rock, page 142-143, using the videos linked below. Submit it to the Igneous Rocks assignment in your lab section's Canvas space — submission instructions HERE .
    Identify these specimens, in the order given, on page 142 of the AGI/NAGT Lab Manual :
    Identify these specimens, in the order given, on page 143 of the AGI/NAGT Lab Manual :
  19. Scan: Earth, chapter 5, Volcanoes and Volcanic Hazards
  20. Do: AGI/NAGT Lab Manual, Activity 5.8 Tectonic Setting of Some Major Volcanic Rock Types, page 144, and submit it to the Igneous Rocks assignment in your lab section's Canvas space — submission instructions HERE .

Mastering Geology Reminder

Complete the Dyamic Study Module called Igneous Rocks and HW05 by going to Mastering Geology through the Canvas space associated with this lecture section (202030 GEO 1405 01 - The Dynamic Earth)

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