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A fissure vent, also known as a volcanic fissure, eruption fissure or simply a fissure, is a linear volcanic vent through which lava erupts, usually without any explosive activity. The vent is often a few metres wide and may be many kilometres long. Fissure vents can cause large flood basalts which run first in lava channels and later in lava ...
The Giant's Causeway (Irish: Clochán an Aifir) [1] is an area of approximately 40,000 interlocking basalt columns, the result of an ancient volcanic fissure eruption. [3] [4] It is located in County Antrim on the north coast of Northern Ireland, about three miles (4.8 km) northeast of the town of Bushmills.
The toponym of the volcanic fissure is the same as that of the area to the east of the Nāpau crater where it opened. [2] [3] As Kamoamoa does not appear as a single volcanic cone, it is not preceded by the Hawaiian term Puʻu, meaning "hill", unlike Puʻu Kamoamoa, an ancient cone located just northeast of the fissure but covered by Puʻu ʻŌʻō since its formation in 1983.
A volcanic fissure and lava channel. A fissure vent, also known as a volcanic fissure or eruption fissure, is a long volcanic vent through which lava erupts. Fissure vents are connected to deep magma reservoirs and are typically found in and along rifts and rift zones. [14] They are commonly associated with shield volcanoes.
Crack in the Ground marks the western edge of this small, volcano-tectonic depression. The crack is the result of a tension fracture along a hingeline produced by the draping of Green Mountain lava flows over the edge of upthrown side of the concealed fault zone. The fissure is located at the southwest corner of Four Craters Lava Field. [2]
Occasionally, fissure eruptions associated with rift zones can actually evolve into new vents along the volcanic edifice, generating lava flows lasting for months or longer. [1] These lava flows add surface materials to the slopes of the volcano, extending the slopes outward in a general flattening of the morphology of the flank. [6]
On the evening of 18 December 2023, a volcanic eruption occurred at Sundhnúksgígaröð north of Grindavík, [6] with images showing lava spewing from fissures in the ground. [7] The intensity of the eruption and accompanying seismic activity which preceded it decreased early on 19 December, with lava seen spreading laterally from both sides ...
Some of the eruptive structures formed during volcanic activity (counterclockwise): a Plinian eruption column, Hawaiian pahoehoe flows, and a lava arc from a Strombolian eruption. Several types of volcanic eruptions—during which material is expelled from a volcanic vent or fissure—have been distinguished by volcanologists.