RESOURCES & ENVIRONMENTCH. 3. INTERNAL ENERGY OF THE EARTH

Volcanic clouds in Iceland (April 14, 2010)http://inthepark.egloos.com/4727911

3-1. PLATE TECTONICS3-1-1. Plate Tectonics?

Unified theory of explaining (all) the geologi-cal processes (or phenomena) with the dy-namics (motion) of the plates (on the surface of the Earth)

(tectonics from tectonicus, meaning “per-taining to building”)

3-1-2. Histories

• Theory of continental drift:• 16C Abraham Ortellius• 17C Francis Bacon• 19C Antonio Snider-Pellegrini• 1912 Alfred Wegener (1880-1930) – scientifi-

cally established the theory• Theory of sea-floor spreading

• Early 1960s, Robert S. Dietz , Harry H. Hess• Mantle convection

• 1928 Arthur Holmes

Evidences of continental drift –shape of the continents

Evidences of continental drift –fossils

Evidences of continental drift – rocks

http://www.indiana.edu/~g103/G103/week11/week11.htm

Evidences of sea floor spreading – geomagnetic reversal

http://www.indiana.edu/~geol116/week7/week7.htm

3-1-3. Plates & Plate Boundaries

• Boundaries• Convergent:• Divergent• Transform (or Conservative)

http://picsdigger.com/keyword/transform%20plate%20boundary/

http://nieblog.projo.com

http://sideshow.jpl.nasa.gov/mbh/all/images/global.jpg

http://www.uwsp.edu/geo/faculty/lemke/geog101/lecture_outlines/18_plate_tectonics.html.