Assertion: lithosphere's crust | /r/HasProperty | subducted
Facets:
value: rarely
type: DEGREE
Source sentences:
text: Here, the oceanic crust of the enormous North American plate (carrying the western Atlantic Ocean) is being subducted beneath the oceanic crust of the smaller Caribbean plate.
text: Before the middle of the 20th century, most geoscientists maintained that continental crust was too buoyant to be subducted.
text: Continental crust is subducted with difficulty, but is subducted to depths of 90-150 km or more, as evidenced by ultra-high pressure (UHP) metamorphic suites.
text: Continental crust is rarely subducted (this may occur where continental crustal blocks collide and overthicken, causing deep melting under mountain belts such as the Himalayas or the Alps).