The theory of plate tectonics holds that as the expanding oceanic crust is thrust beneath the continental plate margins, it penetrates deep enough into the Earth to be partly remelted.
(the expanding oceanic crust; is thrust; L:beneath the continental plate margins) (it; to be partly remelted; ) (The theory of plate tectonics; holds; that as the expanding oceanic crust is thrust beneath the continental plate margins, it penetrates deep enough into the Earth to be partly remelted) Context(The theory of plate tectonics holds,List([0, 35))):(it; penetrates; deep enough into the Earth)
The theory of plate tectonics holds,List([0, 35))
the expanding oceanic crust it The theory of plate tectonics it
is thrust to be partly remelted holds penetrates
L:beneath the continental plate margins
that as the expanding oceanic crust is thrust beneath the continental plate margins, it penetrates deep enough into the Earth to be partly remelted
deep enough into the Earth