Assertion: ocean's depth | /r/HasProperty | the layer of hot rock
Facets:
value: underneath the surface
type: LOCATION
Source sentences:
text: The depth of the phenomenon — 700 km below the mantle, which is the layer of hot rock underneath the surface — is also the perfect temperature and pressure for water to ooze out of the ringwoodite “almost as if it’s sweating,” Jacobsen says.