Assertion: caldera | /r/CapableOf | form the huckleberry ridge eruption
Facets:
value: over the past 2.1 million years
type: TEMPORAL
value: during the last
type: TEMPORAL
Source sentences:
text: The caldera formed during the last of three supereruptions over the past 2.1 million years: the Huckleberry Ridge eruption 2.1 million years ago (which created the Island Park Caldera and the Huckleberry Ridge Tuff); the Mesa Falls eruption 1.3 million years ago (which created the Henry's Fork Caldera and the Mesa Falls Tuff); and the Lava Creek eruption approximately 630,000 years ago (which created the Yellowstone Caldera and the Lava Creek Tuff).