Changes

In a typical "oceanic" [[environment]], [[volcano|volcanoes]] are aligned along the [[crest]] of a broad [[ridge]] that marks an active [[fracture]] system in the oceanic [[crust]]. [[Basalt|Basaltic]] [[magma]]s, generated in the upper [[mantle]] beneath the ridge, rise along fractures through the basaltic layer. Because the [[granite|granitic]] crustal layer is absent, the magmas are not appreciably modified or changed in [[composition]] and they [[erupt]] on the surface to form basaltic volcanoes. <ref>[http://vulcan.wr.usgs.gov/Glossary/volcano_terminology.html Glossary of Volcano and Related Terminology (Tilling, 1985)]</ref>

In a typical "oceanic" [[environment]], [[volcano|volcanoes]] are aligned along the [[crest]] of a broad [[ridge]] that marks an active [[fracture]] system in the oceanic [[crust]]. [[Basalt|Basaltic]] [[magma]], generated in the upper [[mantle]] beneath the ridge, rise along fractures through the basaltic layer. Because the [[granite|granitic]] crustal layer is absent, the magma are not appreciably modified or changed in [[composition]] and they [[erupt]] on the surface to form basaltic volcanoes. <ref>[http://vulcan.wr.usgs.gov/Glossary/volcano_terminology.html Glossary of Volcano and Related Terminology (Tilling, 1985)]</ref>

==References==

==References==