Lecture 4 Plate Tectonics and time

Lecture 4 Plate Tectonics and time - Lecture 4: Plate...

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1 Lecture 4: Plate Tectonics and Geologic Time 2 Lecture 4: Plate Tectonics and Geologic time So what’s in there? The internal structure of the earth How does the material on the surface move about? 3 Lecture 4 The Earth’s Internal Structure Mantle Lithosphere Core 4 Lecture 4: Plate Tectonics A Theory is a composite of ideas explaining observations: the motion of the lithosphere generation of earth’s major features Theory: Earth’s Crust is a series of plates which move about the surface 5 Plate Boundary Features 6 Lecture 4: Plate tectonics, The Motion of Crustal Plates Hot material rises up at the ridges, forms crust Cooler, denser slabs of oceanic crust descend into the mantle Plates move relative to each other at a very slow but continuous rate
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Lecture 4 Plate Tectonics: The Driving Mechanism Transfer of heat in the Mantle: Convection Convection Cells 8 Lecture 4: Plate Tectonics Tracking plate movement via satellite 9 Breakup of Pangaea 10 Lecture 4: Plate tectonics, Plate Boundaries Plate boundaries Divergent plate boundaries Convergent plate boundaries (two kinds) Transform fault boundaries 11 Lecture 4: Plate tectonics, Plate Boundaries Divergent
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This note was uploaded on 01/19/2012 for the course EARTH SCIE 1081 taught by Professor Samrussell during the Fall '11 term at UWO.

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Lecture 4 Plate Tectonics and time - Lecture 4: Plate...

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