Lecture 7: Plate Tectonics 4 
Lecture 7: Plate Tectonics 4
by UCLA / Edwin Schauble
Video Lecture 7 of 27
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Date Added: December 5, 2010

Lecture Description

October 12, 2009

Continent-Continent Convergence
• India-Asia collision
• Himalayas
• Continental crust is too buoyant to
subduct, crumples and thickens at
the surface.
• Extra-thick continental crust ---> BIG mountains.

Transform Boundaries
Transforms and seismicity

Hotspots & Mantle Plumes
• Stationary volcanic sources in mantle
• Ocean Crust ~ 10% generated at hotspots
• Heat transfer: ~10-30% of mantle heat flux
• Hotspot Island Chains

Hawaii-Emperor Seamount Chain Traces Past Plate Motion
Tectonic Evolution of Ocean Basins
Oceanic life cycles (Wilson Cycle): ~200-500 million years to open and close
Paleogeographic reconstruction
Regional & Local Tectonics of California
Pacific Plate Evolution
Easternmost Pacific Plate Evolution
Southern CA Evolution
Coast Ranges & Central Valley
The Sierra Nevada
The San Andreas isn’t the only fault in Southern California

Lecture Notes: Lecture 7: Plate tectonics 4

Course Index

Course Description

In this course, Prof. Edwin Schauble gives 27 video lectures on Introduction to Oceanography. This class provides a general introduction to geological, physical, chemical, and biological processes and history of Earth's global oceanic system.

Prerequisites
•High school science background
– Math: algebra & geometry, graphs
– Metric units
– Geography: maps, Earth's major features, longitude & latitude
– Chemistry: elements, atoms, molecules, chemical equations
– Physics: matter, density, waves, velocity, energy, gravity
– Biology: genus, species, evolution, plants & animals

Original Course Name: Earth & Space Science 15: Introduction to Oceanography.

Note
: Some clips and images may have been blurred or removed to avoid copyright infringement.

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