caldera, large bowl-shaped volcanic depression more than one kilometre in diameter and rimmed by infacing scarps. Calderas usually, if not always, form by the collapse of the top of a volcanic cone or group of cones because of removal of the support formerly furnished by an underlying body of magma (molten rock).
8 окт. 2024 г.
Types of Calderas - National Geographic Education education.nationalgeographic.org › resource › t...
30 апр. 2024 г. · Without any structural support below, the land around the erupting volcanic vent or vents collapses inwardly, creating the bowl-shaped caldera. |
Caldera: a caldera is a large concavity. The majority of the volcano has fallen into the emptied magma chamber after an eruption. A new volcanic cone can grow ... |
Caldera or crater…what's the difference? - USGS.gov www.usgs.gov › observatories › yvo › news › c...
8 янв. 2024 г. · A caldera is a type of crater, but calderas are distinguished by their large sizes and specific association with volcanic collapse. |
19 окт. 2023 г. · A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the ... |
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