Online Geology Textbooks
Physical Geology 2nd Edition A comprehensive, online textbook from British Columbia. Navigate to different topics from the Table of Contents
Rivers
River Landforms An excellent overview of the development and evolution of river systems.
Failure of the Teton Dam A catastrophic example of how engineering cannot always conquer geological challenges.
Huge boulders leave trail of destruction in Italian Alps
Fossils and Geologic Time
From the University of California Museum of Paleontology
Getting into the Fossil Record
Deep Time (requires Flash) Use the Geology, Transformation, and Extinction links to create event cards for your group's assigned region of our Geologic Timeline.
Radioactive Dating Game Try your hand at estimating the age of rocks and fossils after you have tried the other four tabs from this simulation from PhET.
Northwest Origins The geologic history of Washington State.