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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 ...
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.
Together with fields from other fissures they make up the Lava Beds of Idaho, which in turn are in the much larger Snake River Plain volcanic province. The Great Rift extends across almost the entire Snake River Plain. Elevation at the visitor center is 5,910 feet (1,800 m) above sea level. [11]
The name is perfect, even while it dramatically undersells this geologic wonder in remote southeast Oregon. It's called Crack in the Ground, a volcanic fissure 70 feet deep and two miles long that ...
The fissure that was created on Wednesday night stretched about 1.8 miles long, according to the country's meteorological office. This is the volcano's seventh eruption this year, according to ...
A volcano erupted in southwest Iceland at around 8 a.m. local time. The Icelandic Meteorological Office (IMO) reported that the southernmost part of the fissure was “about 900 m from the town of ...
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]
Not so in the Snake River Plain, where relatively quiet eruptions of soupy black basalt lava flows alternated with tremendous explosive eruptions of rhyolite, a light-colored volcanic rock. [8] Cinder cones dot the landscape of the Snake River Plain. Some are aligned along vents, the fissures that fed flows and cone-building eruptions. Calderas ...