GENERAL

Ask-A-Geologist ('E' 'M' 'H')
Students and teachers can email earth science questions to a geologist from the United States Geological Survey.
walrus.wr.usgs.gov/ask-a-geologist/

Canadian Landscapes ('E' 'M' 'H')
Discusses the geological features of Canada via an array of photographs and good, concise text descriptions. Includes detailed looks at glacial formations. Their server seems to be slow sometimes, so one must be patient in order to reap this superb site's benefits. Part of the Geological Survey of Canada's Terrain Sciences Division.
sts.gsc.nrcan.gc.ca/landf.htm

Discovering Canada's Geoscience Heritage ('M' 'H')
In addition to providing extensive information on the geology of Canada, this Geological Survey of Canada site also explores the history of geologic research in that country.
collections.ic.gc.ca/geoscience/

Gem & Mineral Collection ('E' 'M' 'H')
In their natural state and set in jewelry. Comments on individual items. Great pictures. By the Smithsonian.
galaxy.einet.net/images/gems/gems-icons.html

Geology and Geologic Time ('H')
Great interactive exhibit by UC Berkeley which includes some historical perspective on the development of geological/scientific thinking, detail on the various geological time periods, and a Geological Time Machine which explores each topic with more detail. This site references its sources, a feature that is not found on many Web sites.
www.ucmp.berkeley.edu/exhibit/geology.html
Geological Time Machine:
www.ucmp.berkeley.edu/help/timeform.html

Geology of the Grand Canyon ('M' 'H')
Detailed information, with illustrations of the layers and wonderful photography.
www.kaibab.org/geology/gc_geol.htm

Geology Glossary ('H')
Designed for scientists and scientist-students by the University of CA., Berkeley.
www.ucmp.berkeley.edu/glossary/glossary_2.html

Himalayas: Where Earth Meets Sky ('M' 'H')
Designed by teenagers, this site is excellent in its content. Discusses geology of the area in addition to investigating environmental issues.  It was a finalist in a past ThinkQuest educational Web site competition.
library.thinkquest.org/10131/
Geological formation of the Himalayas:
library.thinkquest.org/10131/geology.html

The Mineral Gallery ('M' 'H')
Features extensive catalog of minerals and their properties, organized by name, by class, and other groupings. Designed by Amethyst Galleries, Inc.
Minerals by name:
mineral.galleries.com/minerals/by_name.htm
By class:
mineral.galleries.com/minerals/by_class.htm
By special groups (birthstones, location, minerals that "twin," fluorescent minerals):
mineral.galleries.com/minerals/interest.htm

Scientific American Search Engine ('H')
Fantastic resource: type keywords into this search engine in order to locate articles on a desired topic from the Scientific American database.
www.sciam.com/search/

Tracking the North Magnetic Pole ('H')
Learn the history of the North Magnetic Pole from this Geological Survey of Canada Web site. Not only does the pole wonder several miles every year—it moves in an elliptical pattern every day!
gsc.nrcan.gc.ca/geomag/index_e.php
Magnetic Declination Calculator: gsc.nrcan.gc.ca/geomag/field/mdcalc_e.php