GEOL101 2:6-2:10

GEOL101 2:6-2:10 - February 610 Week #6: Global Tectonics...

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February 6-10 Week #6:  Global Tectonics I: From Continental Drift to Sea Floor Spreading  Chapter 3 and Chapter 4 Lecture Objectives Be able to define the Continental Drift Hypothesis, identify the lines of evidence  supporting the hypothesis, and explain WHY the hypothesis was not widely  accepted. Be able to identify and explain how technology advancements led to Henry  Hess’s Sea-Floor Spreading Hypothesis Explain the Sea-Floor Spreading Hypothesis and identify the evidence that Hess  used to support his idea. Use a paleomagnetic record and determine the location of the oldest and  youngest crust. Identify what scientists learned from pale magnetic reversal chronology Explain the importance of the correlation between marine anomalies and  magnetic reversals. The idea that Earth’s continents move has been around for centuries… In the early 17 th  century, Sir Francis Bacon noticed the “puzzle-like” fit of the West  coast of Africa to the shape of the East coast of South America. I. Continental Drift Hypothesis What is the CDH? A hypothesis that proposed that the contients have moved, or  drifted from one location to another over time. He believe that at one time, there  was a single, supercontinent, called Pangaea. Continental Drift in Action: Pangaea broke up into GONDWANALAND AND  LAURASIA 1 st  proposed by a German scientist named AFLFRED WEGENER in 1912 - The  Origins of the Continents and Oceans In 1926, Wegener tried to pitch his CDH again, this time at widely publicized  geology conference in New York City. Wegener’s Lines of Evidence for CDH Puzzle-like fit between the eastern coast of South America and the western coast  of Africa.  Distribution of Fossils
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This note was uploaded on 02/23/2012 for the course GEOL 101 taught by Professor Mapes during the Summer '07 term at UNC.

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GEOL101 2:6-2:10 - February 610 Week #6: Global Tectonics...

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