Geol105_Lecture_03

Geol105_Lecture_03 - Click to edit Master subtitle style 11...

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Unformatted text preview: Click to edit Master subtitle style 11 Violent Earth Geol 105 Prof. Jonathan M. Lees Room 313 Mitchell Hall Voice: (919) 962-0695 jonathan_lees@unc.edu Read Chapter 3 in Abbott Plate Tectonics Plate Tectonics: Scientific Revolution in earth In the 1960s our understanding of the Earth completely changed By 1972, revolution was over Plate Tectonics The need to explain several phenomena observed on the earths surface Paleontology Geomorphology Geology Geology in the 19-th Century William Smith (1769-1838) The Map that Changed the World Simon Winchester Based mainly on fossils and rock strata Geography of the Atlantic ocean Question: Is it coincidence that the continents appear to fit together across the Atlantic? Geographic Fit of continents Note the continental margins Alfred Lothar Wegener (1880-1930) Evidence for Continental Drift & (later) Plate Tectonics Geography & Topography Distribution of paleo-organisms Distribution of geological deposits Global Positioning Systems Magnetic Field Earthquakes and Seismology Paleontology Correlated flora and fauna across continents How can we explain these? Paleontology Correlations How could fossils of land...
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This note was uploaded on 09/20/2009 for the course GEOL 105 taught by Professor Lees during the Spring '08 term at UNC.

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Geol105_Lecture_03 - Click to edit Master subtitle style 11...

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