5 Plate tectonics III

5 Plate tectonics III - Plate Tectonics III Rates and...

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Plate Tectonics III Rates and directions of plate motion Lecture by Professor John Platt Material Material covered in this lecture: covered in this lecture: Understanding Earth, Understanding Earth, Ch 2, pp. 37-42 Reading assignment for next lecture: Chapter 3, pp. 44-61
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Topics covered in this lecture Transform plate boundaries The magnetic record on the ocean floor The Ocean Drilling Program GPS measurements of crustal motions Reconstructing the history of plate motion
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Transform plate boundaries The plates slide horizontally past each other, without any gain or loss of lithosphere. The boundary is a strike-slip fault
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San Andreas Fault Transform boundaries are commonly marked by linear fault traces that offset rivers, highways etc.
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Offset streams along the San Andreas Fault
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Transform faults in the central Atlantic Most transform boundaries are found on the ocean floor, where they offset mid-ocean ridges
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This note was uploaded on 02/27/2008 for the course GEOL 105Lg taught by Professor Davis,platt during the Spring '07 term at USC.

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5 Plate tectonics III - Plate Tectonics III Rates and...

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