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Geology Dictionary
Geology and Earth Science Terms and Definitions
Consult our geology dictionary for definitions, images and short articles about the most commonly used geological terms.
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Click on a letter to find the definition of a geological term.
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US Reference Maps
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Geology & Earth Science Articles
NASA Articles and Image Galleries
Important Geology and Earth Science Dictionaries on Other Websites
Geology Dictionaries
- A list of specialty dictionaries by alphaDictionary.com
Geological and Gem Terminology
- Jillian Bainfield, University of California Berkeley
GeologyLink Glossary
- Houghton Mifflin
Glacier Glossary
- Northeastern Illinois University
Illustrated Glossary of Geologic Terms
- Iowa State University
Schlumberger Oilfield Glossary
Paleontology Glossary
- USGS
Glossary of Cave and Karst Terms
- Speleogenesis
Glossary of Speleological and Caving Terms
- Australian Speleological Federation
Glossary of Volcano and Related Terminology
- USGS
Geography Dictionary / Glossary for Students
- ITS Tutorial School
Water Words Dictionary
- Nevada Division of Water Resources
Geology and Earth Science Dictionary - copyright 2005 - 2009 - All Definitions by Geology.com
Sliding Rocks
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Meteorite Photos
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Yosemite Rockfall
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Photo sequence of a spectacular fall and debris avalanche.
Earth at Night
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NASA's world map of electricity use.
Kilauea Eruption
Kilauea Eruption Pictures:
Great photos of recent lava flows, ashfall and more.