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Edu 290
- 1. Earth’s Hot Spots Volcanoes
- 2. A naturally occurring process Magma rises to the surface At the surface, Lava and/or Pyroclastic Flow What is Volcanism?
- 3. Volcanic Gases Lava Flows Pyroclastic Materials Comp Contents of a Volcano
- 4. Cinder Cones Small, steep-sided Pyroclastic material Shield Volcano Dome-shaped Built up from lava flow Types of Volcanoes Fig. 5.9,b Fig. 5.10
- 5. Composite Volcano Lava Domes Fig. 5.11 Fig. 5.12
- 6. Dangerous gases Volcanic Tremors Forecasting volcanoes? Dangers of Volcanoes
- 7. Distribution of Volcanoes Fig. 5.14
- 8. Circum-Pacific belt Mediterranean belt Cascade range
- 9. Pyroclastic Flows. BBC, 12/10/2008. Youtube.com. BBC, Dec. 2008. Web. 12 Oct. 2010. <http://www.youtube.com/watch?v=XLmbnnh5OLs&feature=related>. Monroe, James S., and Reed Wicander. "Chapter 5:Volcanoes and Volcanism." GEOL. Student ed. Yolanda Cossio, 2011. 82-101. Print. http://www.google.com/imgres?imgurl=http://www.indianchild.com/images/valcanoe2.jpg&imgrefurl=http://www.indianchild.com/volcanoes.htm&usg=__ Works Cited
Notas del editor
- Volcanic Gases:-present day: 50%-80% water vapor< amounts of CO2, Nitrogen, Sulfur gases.Lava Flows:-Panahoe-taffy-like flow-AA- rough, angular block and fragments-Pillow Lava-bubble-like mass, formed when lava chills rapidly.Pyroclastic Materials:-volcanic ash-very toxic
- Cinder Cones-rarelyexcede 400 m high-made from the toxic pyroclastic materialShield Volcanoes-built from the overlapping mineral lava flows
- Composite-composed of lava flows and pyroclastic layers-typically mudflows
- Gas:-very toxic, CO2Volcanic Tremors:-ground motion that last for days to months, causing magma to move beneath the surfaceForecast?-Some larger, more dangerous volcanoes are monitered-United States Geological Survey(USGS) have found several ways to help with the planning of volcanoes.
- Circum-p