Geol 4110
Class 3 - Rock Cycle and Igneous Rocks
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2/12/07
Simulating Magma Crystallization
The Rock Cycle Game
Primer on Igneous Rocks (Powerpoint lecture)
Observation and Interpretation of Igneous Rocks
Other Ideas for Igneous Rock Exercises (MMEW handouts)
Homework - Volcanism and Plate Tectonics
Using the Smithsonian Institute's Global Volcanism Program website
http://www.volcano.si.edu/world/findregions.cfm investigate the types of volcanoes
occurring in one of 19 different regions of the globe
1. New Zealand to Fiji
3. Melanesia and Australia
5. Philippines and SE Asia
7. Kuril Islands
9. Alaska
11. South America
13. West Indies
15. Atlantic Ocean
17. Middle East and Indian Ocean
19. Mediterranean and W. Asia
2. Canada and Western USA
4. Indonesia
6. Japan, Taiwan, Marianas
8. Kamchatka and Mainland Asia
10. Hawaii and Pacific Ocean
12. México and Central America
14. Iceland and Arctic Ocean
16. Antarctica
18. Africa and Red Sea
On the attached table:
1) Inventory the types of volcanoes that occur in your region by filling in the number of each type
(if one of your types isn’t on the list, record it as other) (3 pts)
2) As best you can determine, distinguish your volcano types into explosive (gas and ashdominant), effusive (lava-dominant), or mixed eruption types. To help with terminology, see
the glossary of volcano terms on the USGS website http://volcanoes.usgs.gov/Products/Pglossary or the Volcano World website glossary
http://volcano.und.edu/vwdocs/glossary.html (2 pts)
3) As best you can determine, state what dominant type of lava composition forms each volcano
type – mafic (or basaltic), intermediate (or andesitic), felsic (or rhyolitic), or mixed. (2 pts)
4) Describe the plate tectonic setting (or settings) that characterizes your region by answering the
following questions See the Volcanology Highlight link some tectonic information; also
consult a plate tectonic map such a http://pubs.usgs.gov/publications/text/worldmap.html
or images given in last week’s Plate Tectonic powerpoint lecture. (3 pts)
Tectonic Plates involved: ______________________________________________________
Plate Boundary types involve: __________________________________________________
Other Tectonic features (e.g. hotspots, continental rifts, …)___________________________
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