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Lecture0810fb - Chemistry 83 09/23/10 Origins and Nature of...

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Chemistry 83 09/23/10 1 Origins and Nature of Components of Earth ʼ s Second Atmosphere Buell/Girard, “Chemistry”, Prentice Hall, New Jersey, 1994, p. 37 Earth’s surface fractured to form tectonic plates
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Chemistry 83 09/23/10 2 Convection currents move plates http://www.geog.ouc.bc.ca/physgeog/contents/10i.html Plate motion has major natural consequences Divergent Convergent Transform Thompson, Turk,”Earth Science and Environment”,Saunders,New York, 1995, 19 http://www.extremescience.com/ PlateTectonicsmap.htm
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Chemistry 83 09/23/10 3 http://www.uwsp.edu/geo/faculty/ozsvath/lectures/Plate_Tectonics.htm Convergent subduction causes volcanoes that release internal pressure by blowing gases and solids into the atmosphere Mt. Pinatubo in the Philippines erupted in 1991, releasing molten lava, and spewing millions of tons of gases, hundreds of millions of tons of ash and rocks, as high as 40 km (25 miles) into the atmosphere. Cunningham/Saigo, “Environmental Science, McGraw Hill, New York, 2001, p. 369
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Chemistry 83 09/23/10 4 Volcanic gases became components of earth’s second atmosphere Second Atmosphere Sources: 1) Gases from Big
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This note was uploaded on 12/19/2010 for the course CHEM 83 taught by Professor Bonk,j during the Fall '08 term at Duke.

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Lecture0810fb - Chemistry 83 09/23/10 Origins and Nature of...

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