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A volcanic crater is an approximately circular depression in the ground caused by volcanic activity. [1] It is typically a bowl-shaped feature containing one or more vents. During volcanic eruptions , molten magma and volcanic gases rise from an underground magma chamber , through a conduit, until they reach the crater's vent, from where the ...
The crater is named after French geologist Léonce Élie de Beaumont. [1] The rim of Beaumont is breached in the east, where the lava from Mare Nectaris broached the crater and flooded the interior. Now only a worn and crater-impacted outer wall remains. If the crater once possessed a central peak, it is no longer apparent.
Two volcanic centres are reported, a southern one (Pic Chongui, 594 metres (1,949 ft), with a breached crater to the NW, and a northern centre (Mont M'Tsapéré, 572 metres (1,877 ft)) with a breached crater to the south-east. Mont Bénara is between these two peaks, approximately at the contact point of the two structures.
Belknap Crater is a shield volcano in the Cascade Range in the U.S. state of Oregon. Located in Linn County, ... which breached the rim of the crater. [31] ...
Puhinui Pond Crater, located near the reserve entrance, contains a farm pond. The crater is 200 m × 150 m (660 ft × 490 ft) across and the nearly complete surrounding tuff cone rim rises 1.5–2 m (4.9–6.6 ft) above the pond. [3] Puhinui Arena Crater is breached on both the west and east sides. It is 250 m × 150 m (820 ft × 490 ft) across ...
The most recent flows come from Coffeepot Crater, a large breached cinder cone. These flows show excellent examples of inflated lava. [5] Historically, it is believed that Coffeepot Crater held a pond of lava that would occasionally breach the sides of the crater to flow freely into the field. [4]
The crater is breached on the southwest side and contains the remnants of a lava lake. Late stage activity in the crater formed a small ring of extensively weathered scoriaceous ejecta on the northwest inner wall of the main crater. [3] Like the Spanish Lake Centre to the north, lava from the Flourmill Centre flowed into the valley of Spanish ...
The crater and tuff terms are usually combined into the term maar and maar is often combined into the term diatreme (see text for definitions) rather than diatreme excluding the maar. The word comes from Ancient Greek δία- ( dia- ) 'through, across, over' and τρῆμα (trêma) 'hole, aperture'.