Glossary beginning with O

Volcano Term Definitions

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Obsidiansearch for term: A black or dark-colored volcanic glass, usually composed of rhyolite.
Oceanic Crustsearch for term: The earth's crust where it underlies oceans.
Oceanic Ridgesearch for term: A major submarine mountain range.

VW is a higher education, k-12, and public outreach project of the Oregon Space Grant Consortium
administered through the Department of Geosciences at Oregon State University.

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