Assertion: volcano's crater | /r/HasProperty | formed
Facets:
value: during an eruption
type: TEMPORAL
value: from explosive activity
type: CAUSE
value: from collapse
type: OTHER
Source sentences:
text: While calderas are formed by the collapse of material inside a volcano, craters are formed as materials explode out from a volcano.
text: Pieces of molten and solid rock were ejected, small craters were formed, and an eruption column rose above the vents.
text: A volcanic crater lake is a lake in a crater that was formed from explosive activity or collapse during a volcanic eruption.
text: The four large craters trending NNE from the summit were formed during an eruption 14C dated at 23,000 BP.