Assertion: lava | /r/CapableOf | accumulate at one location
Facets:
value: for a billion years
type: TEMPORAL
value: on the surface
type: LOCATION
Source sentences:
text: The Martian lithosphere does not slide over the upper mantle (asthenosphere) as on Earth, so lava from a stationary hot spot is able to accumulate at one location on the surface for a billion years or longer.