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Download as PDF; Printable version; In other projects Wikimedia Commons; ... Volcanic landforms. Subcategories. This category has the following 33 subcategories, out ...
A volcano needs a reservoir of molten magma (e.g. a magma chamber), a conduit to allow magma to rise through the crust, and a vent to allow the magma to escape above the surface as lava. The erupted volcanic material (lava and tephra) that is deposited around the vent is known as a volcanic edifice, typically a volcanic cone or mountain. [2] [22]
Volcanic group – Collection of related volcanoes or volcanic landforms; Volcanic island – Island of volcanic origin; Volcanic plateau – Plateau produced by volcanic activity; Volcanic plug – Volcanic object created when magma hardens within a vent on an active volcano; Volcano – Rupture in a planet's crust where material escapes
Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent , piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption.
A hotspot volcano is center. [8] Movements of tectonic plates create volcanoes along the plate boundaries, which erupt and form mountains. A volcanic arc system is a series of volcanoes that form near a subduction zone where the crust of a sinking oceanic plate melts and drags water down with the subducting crust. [9]
A volcanic field is a localized area of the earth's crust that is prone to local volcanic activity, and the resulting volcanic landforms.; They are distinct from a volcanic group (volcanic complex), which are a collection of related volcanoes or volcanic landforms.
A rootless cone, also formerly called a pseudocrater, [1] is a volcanic landform which resembles a true volcanic crater, but differs in that it is not an actual vent from which lava has erupted. They are characterised by the absence of any magma conduit which connects below the surface of a planet.
Volcanoes are usually mountains (sometimes islands, lakes, plateaus, calderas, seamounts or lava domes) that are formed when magma (liquid rock) wells up from inside the Earth. There are also analogous formations away from the Earth. Many volcanoes are categorized both as volcanoes and other landforms, such as mountains (if qualified).