Assertion: magma's amount | /r/CapableOf | reach the surface
Facets:
value: ultimately
type: MANNER
Source sentences:
text: Although variations in the crustal thickness might act to modulate the amount of magma that ultimately reaches the surface, this hypothesis does not explain why the farside South Pole-Aitken basin, whose crust is thinner than Oceanus Procellarum, was only modestly filled by volcanic products.