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PLATE TECTONICS What is the Plate Tectonic Theory? 11/17/16 plate tectonic theory= plates/pieces of the lithosphere are constantly moving due to convection currents in the asthenosphere cause of earthquakes, volcanoes, mid ocean ridges, deep ocean trenches & mountain ranges plates move SLOOOOOWLY and constantly move 1-24 cm/yr!!! What evidence proves PT? 11/28/16 (Alfred Wegener and such) ALFRED WEGENER: believed that 300 million yrs ago, there was ONE landmass he called Pangaea=supercontinent published his research in 1915 in The Origins of Continents and Oceans started his research in 1910 hypothesized that Pangaea split & parts drifted apart=Continental Drift Hypothesis gathered evidence from many scientific fields German scientist! Studied the atmosphere/ was a meteorologist, not a geologist Died in 1930-froze to death in a blizzard in Greenland doing what he loved to do-researching the weather Exactly 50 when he died…born in 1880 AW’s evidence that SUGGESTS plate mvmt (HAD) 1) land features: continents fit together like puzzle pieces (N/ SA & Africa) mtn ranges in E. SA and W. Africa are the same type of rock & line up perfectly coal fields in Europe & NA line up as well all this stuff is now separated by an ocean! 2) fossils: fossils of the same organisms found on different continents now separated by oceans no way did that fat little dino. swim across an entire ocean and live to tell about it! 3) climate: 4)