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Places on the [[ocean]] floor where [[lithospheric]] plates separate and [[magma]] erupts. About 80 percent of the [[Earth|Earth's]] [[volcano|volcanic]] activity occurs on the ocean floor. <ref>[http://vulcan.wr.usgs.gov/Glossary/volcano_terminology.html Glossary of Volcano and Related Terminology (Teacher's Packet) ]</ref>
Places on the [[ocean]] floor where [[lithospheric]] plates separate and [[magma]] erupts. About 80 percent of the [[Earth|Earth's]] [[volcano|volcanic]] activity occurs on the ocean floor.<ref>[http://vulcan.wr.usgs.gov/Glossary/volcano_terminology.html Glossary of Volcano and Related Terminology (Teacher's Packet) ]</ref>
==References==
==References==
<references/>
<references/>
[[category:oceanography]]
[[Category:Oceanography]]