It allows users to make a map by selecting the world area and then choosing the features they want included. Editing and printing the results are part of the deal. Earth Sciences and Oceanography Resources Chris Sherman's portal to earth science and oceanography search engines and databases on the Invisible Web, a large zone of the Net that the standard search engines cannot mine. The 18 illustrated lectures are supplemented by some reference sections including Ask a Gemologist, a Gem Images Gallery, a glossary, and mineralogical tables. Team scientists study processes and mechanisms of these hazards, monitor events, analyze effects, and develop mitigation strategies.
Links add to the site's comprehensiveness.
Illustrated Glossary of Geologic Terms Created and maintained at Iowa State University, this glossary provides excellent definitions and has links to relevant illustrations and additional information, but the images are limited in number and not all of the links work. Its site is designed to deliver high quality seismic data. This is a searchable guide to minerals and gems that provides a multitude of sorting options. These include alphabetical, chemical or crystal group, color, streak, hardness, elemental affiliations, and Dana or scientific classification. Material on each mineral includes properties, distribution, uses, and usually images.