Web links can be found in your text at the end of each chapter. I will also highlight here some web sites you may be interested in.

Plate Tectonics

• Large-scale layering of the earth
• Plate motions & Pangaea
• Sea floor spreading
• Transform faults

Volcanoes & Magma

• Current Mount St. Helens information
• Magma generation at subduction zones
• Pillow basalt formation off Hawaii
• Crystal settling & magma evolution

Earthquakes

• Current Parkfield, CA information
• Parkfield background
• P and S waves
• How a seismograph works
• USGS current earthquakes page

Geologic Time

• Flash movie of relative dating principles
• Second flash movie of relative dating principles

The Deep Ocean

• Quicktime of Mid-Atlantic Ridge

Streams

• USGS Water Data

Groundwater

• Well-pumping flash animation from Jim Myers, U. Wyoming

Glaciers

• Glacial formation and movement flash animation from Tarbuck & Lutgens
• Glacial advance and retreat flash animation from Tarbuck & Lutgens

Beaches

• Wave motion and refraction from Tarbuck & Lutgens
• Beach Drift from Tarbuck & Lutgens
• Coastal Erosion from Tarbuck & Lutgens
• Aerial photos of coastal erosion in WA & OR & CA