Lecture 16-new

Lecture 16-new - Lecture 16: Continental Drift and...

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Lecture 16: Continental Drift and Sea-Floor Spreading Continental Drift and Sea-Floor Spreading are geological theories that revolutionized our understanding of Earth as a dynamic place that has changed dramatically over time.
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Major Components of the Earth’s Interior Layers of the Earth: Inner and Outer Core Mantle Oceanic or Continental Crust Lithosphere : uppermost mantle and crust above Aesthenosphere
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Evolution of Views about the Origin of the Ocean Basins Before the 19th Century AD, the most common view was that all Earth features formed during the origin of planet and are mostly unchanged since then. But, even the Ancient Greeks were aware of the fossil remains of marine organisms near the tops of mountains. How did they get there?
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19th Century Views of Ocean Basin Origins The Pacific Ocean basin formed when the Moon was ripped away from the Earth. (The size of the Pacific Ocean Basin is just larger than the diameter of the Moon.) Vertical Tectonics - The surface of the Earth goes up and down (over long time intervals) due to unknown processes acting deep in the Earth. One part of this theory was isostacy.
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MOUNTAINS (CONT. CRUST) FLOAT ON THE MANTLE ISOSTATIC          EQUILIBRIUM 2.7 g/cm 3 4.5 g/cm 3
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Theory of Continental Drift Since the 16th Century as better and better maps were being developed, people began to notice that
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This note was uploaded on 05/08/2009 for the course GEOL 150Lxg taught by Professor Stott during the Spring '07 term at USC.

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Lecture 16-new - Lecture 16: Continental Drift and...

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