Assertion: caldera | /r/HasProperty | formed
Facets:
Source sentences:
text: The caldera was formed when the magma underneath a volcano drained away.
text: Earlier, geologists believed that calderas were formed because of blowing away of the top of a volcano with rush of magma and lava upwards.
text: A caldera looks like a volcanic crater, but it is actually formed when the overlying rocks collapse when a magma chamber is emptied creating vacuum below.
text: A caldera is formed when a large eruption of magma, or lava, leaves a gigantic empty chamber underground.
text: The caldera has a width of 3 km. and was formed when the most western volcano of the mountain range in Ecuador collapsed, after a catastrophic eruption about 800 years ago.
text: The caldera was formed during a series of minor rhyolitic explosive eruptions between about 72,000 and 57,000 years ago.
text: The caldera is formed when the volcano collapses into itself.
text: The caldera was formed during a series of minor rhyolitic explosive eruptions between about 72,000 and 57,000 years ago.
text: Contrary to popular belief, Haleakalā crater is not volcanic in origin, nor can it accurately be called a caldera (which is formed when the summit of a volcano collapses to form a depression).
text: Once the caldera was formed, more eruptions began to fill it with lava flows, and lava also erupted at numerous sites outside the caldera, covering much of the volcano’s north and south flanks.
text: The caldera was formed when a magma chamber collapsed.
text: A caldera was formed which filled with water to create the deepest lake in the Philippines at 2000 feet.
text: The caldera was formed during two major dacitic explosive eruptions radiocarbon dated at about 23,000 years BP.