11_drift_paleomag_09_post

11_drift_paleomag_09_post - 11: Continental Drift,...

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ft, Paleomag: t, Paleomag: 1 11: Continental Drift, Paleomagnetism
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ft, Paleomag: t, Paleomag: 2 Why is this important? Continental drift is the forerunner to  plate tectonics , which explains the  first-order topography of Earth’s surface; the distribution of mountain  belts, fossils, and climate-sensitive sedimentary rocks; how the arrangement  of continents and oceans has changed through time; and the locations and  ultimate cause of earthquakes and volcanoes. It also provides a framework  for exploring for natural resources.
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ft, Paleomag: t, Paleomag: 3 Timeline 1620 Sir Francis Bacon --the similarity in the  shape of the coastlines  of South America and  Africa is “no mere accidental occurrence.” Wikipedia Wikipedia
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ft, Paleomag: t, Paleomag: 4 1858 Antonio Snider-Pellegrini  proposed that all continents were previously  assembled in one giant continent  that subsequently broke apart due to  Noah’s flood. Timeline Wikipedia
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ft, Paleomag: t, Paleomag: 5 1912  (lecture)- 1915  (book:  Die Entstehung der  Kontinente und Ozeane ):  Alfred Wegener   summarized previous work along with his own  research to propose the theory of continental  displacement (wrongly translated as continental  drift) and the former existence of the  supercontinent of Pangea Timeline Fig. 3.2 Wikipedia Wikipedia
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ft, Paleomag: t, Paleomag: 6 Continental drift--evidence Jigsaw fit of continents; matching coastlines Fig. 3.2
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ft, Paleomag: t, Paleomag: 7 Continuity of similar rock units (now separated by oceans) when continents are restored Continental drift--evidence Fig. 3.6
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ft, Paleomag: t, Paleomag: 8 Similarity of Similarity of non-marine non-marine fossils now separated by oceans fossils now separated by oceans Fig. 3.5 Continental drift--evidence
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ft, Paleomag: t, Paleomag: 9 Rocks now exposed near equator : evidence of past glaciations Fig. 3.3 Continental drift--evidence
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ft, Paleomag: t, Paleomag: 10 10 Fig. 3.3 Rocks now exposed near equator : evidence of past glaciations Continental drift--evidence
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ft, Paleomag: t, Paleomag: 11 11 Past tropical conditions in now polar regions Fig. 3.4 Continental drift--evidence
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ft, Paleomag: t, Paleomag: 12 12 Continental drift--cause Continents plowed through oceanic crust; caused by Earth’s rotation 1924:  Harold Jeffreys  determines that Wegener’s proposed  driving mechanism of continental drift was too weak to move  continents through strong oceanic crust. Thus, most  geologists rejected Wegener’s theory www.york.ac.uk
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ft, Paleomag: t, Paleomag: 13 13 11-1. This scientist proposed the theory of continental drift: A. Charles Darwin B. James Hutton C. Charles Lyell D. Alfred Wegener 11-2. Wegener suggested all of the continents were once ____________. A. aligned north to south along the prime meridian during the late Cenozoic
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This note was uploaded on 09/25/2011 for the course GEOLOGY 100 taught by Professor Lepre during the Fall '11 term at Rutgers.

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11_drift_paleomag_09_post - 11: Continental Drift,...

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