Assertion: lithosphere's crust | /r/HasProperty | formed at oceanic ridge
Facets:
Source sentences:
text: Oceanic crust is formed at an oceanic ridge, while the lithosphere is subducted back into the asthenosphere at trenches.
text: Oceanic crust is transient, being formed at the oceanic ridges and destroyed at the trenches.
text: Oceanic crust is formed at an oceanic ridge , while the lithosphere is subducted back into the asthenosphere at trenches