RESOURCES & ENVIRONMENT CH. 3. INTERNAL ENERGY OF THE EARTH Volcanic clouds in Iceland (April 14,...
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Transcript of RESOURCES & ENVIRONMENT CH. 3. INTERNAL ENERGY OF THE EARTH Volcanic clouds in Iceland (April 14,...
RESOURCES & ENVIRONMENT
CH. 3. INTERNAL ENERGY OF THE EARTH
Volcanic clouds in Iceland (April 14, 2010)http://inthepark.egloos.com/4727911
3-1. PLATE TECTONICS
3-1-1. Plate Tectonics?
Unified theory of explaining (all) the geo-logical processes (or phenomena) with the dynamics (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 sea floor spreading – geomagnetic reversal
http://www.indiana.edu/~geol116/week7/week7.htm