Spreading centers such as the Juan de Fuca Ridge are volcanic mountain chains along which oceanic plates diverge and new oceanic crust is formed.
(Spreading centers such as the Juan de Fuca Ridge; are; volcanic mountain chains along which oceanic plates diverge and new oceanic crust is formed) (oceanic plates; diverge; L:volcanic mountain chains) (new oceanic crust; is formed; )
Spreading centers such as the Juan de Fuca Ridge oceanic plates new oceanic crust
are diverge is formed
volcanic mountain chains along which oceanic plates diverge and new oceanic crust is formed
L:volcanic mountain chains