Earth Science
Athena Earth Sciences Resources
Provides links to sites on mineralogy, geology and geophysics, petrology, meteorites, volcanology, paleontology, chemistry and crystallography.
Mineralogy Database
This site contains more than 5,000 pages of mineral data description with links. Headings include crystallography, chemical composition, physical and optical properties, as well as an alphabetical listing of over 4,200 mineral species.
National Geophysical Data Center
A compendium of NGDC resources on geopysics topics, including marine geology and geophysics, land geophysics, geomagnetism, bathymetry and topography, and solar-terrestrial physics. Includes interactive maps.
Oceanography Hotlist
Web Geological Time Machine
Take a journey through the history of the earth, starting with Hadean time (4.5 to 3.8 billion years ago) and travel forward to the present day.
