What is the difference between fissure and a vent

How to cite. Definition A source of extrusive lava that erupts through an elongated fracture rather than a central circular vent. This process is experimental and the keywords may be updated as the learning algorithm improves. This is a preview of subscription content, log in to check access. Fink JH The emplacement of silicic dome and lava flows. J Geophys Res , E Geophys Res Lett 30 11 J Geophys Res E9 MacDougall JD Continental flood basalts.

Oskarsson BV The Skerin ridge on Eyjafjallajokull, south Iceland: morphology and magma-ice interaction in an ice-confined silicic fissure eruption. Pappalardo R, Greeley R Single-plate rifting model for ridge and trough terrain on icy satellites. Renewed eruptions generally occur from new parallel fractures offset by a few hundred to thousands of metres from the earlier fissures.

This distribution of vents and voluminous eruptions of fluid basaltic lava usually build up a thick lava plateau rather than a single volcanic edifice. These vents produce low ramparts of basaltic spatter on both sides of the fissure.

More isolated lava fountains along the fissure produce crater rows of small spatter and cinder cones. The fragments that form a spatter cone are hot and plastic enough to weld together, while the fragments that form a cinder cone remain separate because of their lower temperature.

Related keywords 1 : photoglossary. Try our free app! Android iOS version. Chile earthquake 1 April Great magnitude 8. Did you know the seismic waves were recorded everywhere in the world? Katla Earthquakes. Latest quakes at Katla volcano One of Iceland's most active and dangerous volcanoes is showing signs of unrest and statistically due for a new eruption. Earthquakes could give a clue. Active volcanoes in China Did you know that there are at least 15 active volcanoes in China?

The last eruption was from the Kunlun volcano in Fuego volcano photos One of Central America's most active volcanoes, Fuego in Guatemala is in near-permanent explosive eruption with intermittent phases of increasing activity that generate lava fountains, lava flows and pyroclastic flows.