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Eldgjá (Icelandic pronunciation: [ˈɛltˌcauː] ⓘ, "fire canyon") is a volcano and a canyon in Iceland.Eldgjá is part of the Katla volcano; it is a segment of a 40 kilometres (25 mi) long chain of volcanic craters and fissure vents that extends northeast away from Katla volcano almost to the Vatnajökull ice cap.
Silfra fissure The Mid-Atlantic Ridge passing through Þingvellir Rocks and boulders that have piled up in the fissure due to earthquakes.. Silfra (Icelandic pronunciation: [ˈsɪl(v)ra]) is a rift formed in the Mid-Atlantic Ridge – the divergent tectonic boundary between the North American and Eurasian plates – and is located in the Þingvallavatn Lake in the Þingvellir National Park in ...
The Gjálp eruption took place at a some kilometers long known fissure under 550–700 m (1,800–2,300 ft) of glacier ice within Vatnajökull. The eruption in October 1996 could push through this ice in about 30 hours [6] and took place from 30 September to 13 October 1996. The eruption fissure had a length of 6–7 km (3.7–4.3 mi). [1]
The upper basalt is Roza Member, while the lower canyon exposes Frenchmen Springs Member basalt A flood basalt (or plateau basalt [ 1 ] ) is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava .
A submarine canyon is a steep-sided valley ... is 800 km (497 mi) long, and 1,200 m (3,900 ft) deep [citation needed ... Their primary causes have been subject to ...
A fracture will sometimes form a deep fissure or crevice in the rock. Fractures are commonly caused by stress exceeding the rock strength, causing the rock to lose cohesion along its weakest plane. [1] Fractures can provide permeability for fluid movement, such as water or hydrocarbons.
Monterey Canyon begins at Moss Landing, California, which is situated along the middle of the coast of Monterey Bay, and extends horizontally 95 mi (153 km) under the Pacific Ocean where it terminates at the Monterey Canyon submarine fan, reaching depths of up to 3,600 m (11,800 ft) below surface level at its downstream mouth. It is a part of ...
Sumidero Canyon (Spanish: Cañón del Sumidero) is a deep natural canyon located just north of the city of Chiapa de Corzo in the state of Chiapas, in southern Mexico.The canyon's creation began around the same time as the Grand Canyon in the U.S. state of Arizona, by a crack in the area's crust and subsequent erosion by the Grijalva River, which still runs through it.