Dictionaries
- Geology Dictionary by WebRefWebRef's Geology Dictionary with several thousand terms in HTML format.
- Dictionary of Geological TermsAn excellent HTML glossary of general geological terms located at geology.com.
- GeologyLink Glossary
- GeoMan's Glossary of Earth Science
- Glacier Glossary An A-to-Z glossary of glacier terms written by the professor and students of an NEIU glaciology class.
- Minerals: A List of Chemical Composition Athena systematic mineral databases: alphabetical list of minerals
- Schlumberger Oilfield Glossary Searchable online glossary of oilfield terminology by the Schlumberger Corporation.
- Soil Science Glossary The Official Web Site for the Soil Science Society of America. The Soil Science Society of America (SSSA) is the professional home for over 6,000 professionals throughout the world dedicated to the advancement of soil science. The primary purpose of the Society is to advance the discipline and practice of soil science by acquiring and disseminating information about s
- Speleological and Caving Terms Australian Speleological Federation glossary of speleological and caving terms with references to related literature.
- US Geological Survey Visual Earthquake Glossary A basic but illustrated vocabulary for understanding earthquakes.
- USGS Photo Glossary of Volcano Terms
- Visual Earthquake Glossay A brief but reliable glossary of earthquake terminology.
- Volcanic and Geologic Terms Glossary Common terms defined.

