Geology 101 at University of Oregon: a lot of great information about introductory geology.

Geology --a description of Geology and some resources, designed for people who want to pursue engineering degrees.

Earth Science links. --a long list of geological links, maintained by Dr. Rebecca Dorsey of U of Oregon.

Geological Photographs. --index of photos on this website.

National Park Geology: a geology site put out by the NPS--check out the "Park Geology Tour".

National Park Service/USGS "Park Interpreter" Site --a growing site on geology of National Parks with the park interpreter in mind. Very informative with some useful links.

San Andreas fault. --an outstanding source by some noted experts.

GORP--Great Outdoor Recreation Pages--a lot of diverse and useful information about natural areas, including National Parks.

"About Geology".  --a very useful resource.  Includes many state geologic maps and a lot of great information.

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Photos of Rocks --Quiz yourself!

Minerals --information about just about every mineral there is! Go to minerals "by name" and pick what you want to learn about.

Photos of igneous, metamorphic, and sedimentary rocks --photos of outcrops

Photos of igneous rocks, textures, etc. --more photos.

Rock Cycle --Description with a great illustration from the University of Saskatchewan.

Rock Cycle --Description with another good illustration from U. of British Columbia.

Igneous Rocks --good photographs and information--by Dr. Pamela Gore at Georgia Perimeter College.

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Cascade Volcano Observatory (CVO)--US Geological Survey site --all sorts of information.

Mt. St. Helens--a USGS site. Information about all aspects of Mt. St. Helens.

Different types of volcanoes --From the CVO page. Good clear descriptions with photos.

Volcanoes --a huge warehouse of information on volcanoes from all over the world. Sponsored by Dartmouth.

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Plate Tectonics

USGS site on plate tectonics A great deal of clearly presented and illustrated background.

UC Berkeley site --includes animations of the past 750 million years. Also summarizes the basic theory.

Introduction to Plate Tectonics --very informative site with excellent illustrations by Joe Stackhouse, a Pennsylvania High School teacher.

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Photographs of contacts and the criteria used to distinguish between them.

Unconformities.  Photographs and description.

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