Assertion: volcanic crater | /r/HasProperty | constructive forms
Facets:
Source sentences:
text: A volcanic crater in hawaiian, strombolian, vulcanian and surtseyan cones are constructive forms that result from the impossibility of depositing pyroclasts during the explosive phases of an eruption above the vent; thus, craters correspond to conical depressions on top of a monogenetic cone or a larger poligenetic volcano, formed by the acumulation of pyroclastic material around the vent.