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SIO 160: Lecture 4 Plate Motions on a Sphere

Explore the dynamics of plate motions using the Pacific-Antarctic Ridge as an example. Learn about gravity anomalies, fracture zones, and total rotations on a global scale. Dive into the setup for anomaly 13 and discover the significance of the 74°S, 112°E, -27° rotation.

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SIO 160: Lecture 4 Plate Motions on a Sphere

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  1. SIO 160: Lecture 4 Plate Motions on a Sphere

  2. Pacific-Antarctic Ridge: Topo

  3. Pacific-Antarctic Ridge: Gravity

  4. Example: Setup for Anomaly 13: Anomaly picks Fracture zone segments Solution: Rotation: 74°S, 112°E, -27° Rotated picks in red This is a “total rotation“ pole

  5. “The global plate circuit”

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