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Visual Earthquake Glossary - http://earthquake.usgs.gov/learning/glossary.php
Provides terms and their definitions, each with an image. Edited by the USGS (U.S. Geological Survey) Earthquake Hazards Program. |
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Schlumberger Oilfield Glossary - http://www.glossary.oilfield.slb.com/
Defines many terms related to oil and gas exploration and production. Includes illustrations. |
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USGS Photo Glossary of volcanic terms - http://volcanoes.usgs.gov/images/pglossary/index.php
Short, illustrated glossary of terms related to volcanoes. |
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Cengage Learning: Geologylink Glossary - http://college.cengage.com/geology/resources/geologylink/glossary.html
Glossary covering all matters geological. Suitable for students, university instructors, and professional geologists. |
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Geology Dictionary - Geology.com - http://geology.com/geology-dictionary.shtml
Definitions of terms, written at a level appropriate for students in introductory courses. |