Assertion: continent's crust | /r/CapableOf | descend along continental margins
Facets:
value: many millions of years later
type: TEMPORAL
Source sentences:
text: And, using the mobilistic concepts developed before, he correctly concluded that many millions of years later, the oceanic crust eventually descends along the continental margins where oceanic trenches—very deep, narrow canyons—are formed, e.g. along the rim of the Pacific Ocean basin.