Assertion: shield volcano | /r/CapableOf | form at rift zones
Facets:
Source sentences:
text: At rift zones, or divergent margins, shield volcanoes tend to form as two oceanic plates pull slowly apart and magma effuses upward through the gap.
text: At rift zones, or divergent margins, shield volcanoes tend to form as two oceanic plates pull slowly apart and magma effuses upward through the gap.