Assertion: crude oil's hydrocarbon | /r/CapableOf | migrate increased heating
Facets:
value: upwards
type: MANNER
value: due to buoyancy
type: CAUSE
Source sentences:
text: The hydrocarbons are expelled from source rock by three density-related mechanisms: the newly matured hydrocarbons are less dense than their precursors, which causes over-pressure; the hydrocarbons are lighter, and so migrate upwards due to buoyancy, and the fluids expand as further burial causes increased heating.