Wikimedia
Wikipedia: Continental Drift
A brief Wikipedia encyclopedia article on continental drift. It tells what continental drift is, what causes it, and gives examples of evidence that continental drift has occurred.
Smithsonian Institution
National Museum of Natural History: Paleobiology: Geologic Time: Hadean Eon
Journey into the past while reading this comprehensive overview of the Hadean Eon that covers topics such as the formation of the earth, its surface and atmosphere, fossil evidence, erosion and plate tectonics.
University of California
University of California Museum of Paleontology: Distribution in Time and Space
The Understanding Evolution site provides evidence for evolution in biogeography utilizing relative dating, geography, and plate tectonics.
Other
University of California: Ocean Drilling Program
Scientists probe the ocean floor off Costa Rica and find evidence that may tell us more about what goes on in ocean trenches.