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A shield volcano is a type of volcano named for its low profile, resembling a shield lying on the ground. It is formed by the eruption of highly fluid (low viscosity) lava, which travels farther and forms thinner flows than the more viscous lava erupted from a stratovolcano.
Mount Thielsen (Klamath: hisc’akwaleeʔas), [4] is an extinct shield volcano in the Oregon High Cascades, near Mount Bailey. Because eruptive activity ceased 250,000 years ago, glaciers have heavily eroded the volcano's structure, creating precipitous slopes and a horn-like peak. The spire-like shape of Thielsen attracts lightning strikes and ...
This list of shield volcanoes includes active, dormant and extinct shield volcanoes. Shield volcanoes are one of the three types [ specify ] of volcanoes. They have a short cone shape, and have basaltic lava which means the lava has low viscosity (viscosity is a measure of the ability for a liquid to flow)
Mount Warning is the central volcanic remnant of an ancient shield volcano, the Tweed Volcano, which would have been about 1,900 m (6,200 ft) above sea level or just under twice the height of the current mountain. [5][6] This volcano last erupted around 23 million years ago. [7] As the mountain's central vent cooled it shrank, forming a ...
Wrangell was the first high volcano in the Wrangell range to be climbed. Its summit can be visited by ski-equipped airplane. [5] Mount Wrangell and Mount Zanetti from Willow Lake at 1600 ft (500m). Although Mount Wrangell rises over 12,000 ft (3700 m) above this viewpoint, its great height is masked by the extreme width of its shield-like form.
Rift zone. A rift zone is a feature of some volcanoes, especially shield volcanoes, in which a set of linear cracks (or rifts) develops in a volcanic edifice, typically forming into two or three well-defined regions along the flanks of the vent. [1] Believed to be primarily caused by internal and gravitational stresses generated by magma ...
Mountain type. shield volcano. Skjaldbreiður (Icelandic pronunciation: [ˈscaltˌpreiːðʏr̥] ⓘ, "broad shield") is an Icelandic lava shield formed in a huge and quite protracted eruption series from about roughly 9,500 years ago. [ 2 ] The extensive lava fields which were produced by this eruption, flowed southwards, and formed the basin ...
Axial Seamount. Axial Seamount (also Coaxial Seamount or Axial Volcano) is a seamount, submarine volcano, and underwater shield volcano [3] in the Pacific Ocean, located on the Juan de Fuca Ridge, approximately 480 km (298 mi) west of Cannon Beach, Oregon. Standing 1,100 m (3,609 ft) high, [4] Axial Seamount is the youngest volcano and current ...