Volcano Definition Geology

Active volcano one that may explode at any time dormant volcano one that is not active. An opening in the earths crust from which lava ash and hot gases flow or are ejected during an eruption.

Volcanoes National Geographic Society

A volcano is a rupture in the crust of a planetary-mass object such as Earth that allows hot lava volcanic ash and gases to escape from a magma chamber below the surface.

Volcano definition geology. Volcanic ash is the term for all fine-grained volcanic products smaller than 2 mm normally magma or older rock fragmented during explosive eruptions. A volcano that consists of a complex of two or more vents or a volcano that has an associated volcanic dome either in its crater or on its flanks. A usually cone-shaped mountain formed by the materials issuing from such an opening.

Volcanic dome also called Lava Dome any steep-sided mound that is formed when lava reaching the Earths surface is so viscous that it cannot flow away readily and accumulates around the vent. Volcanoes are usually associated with plate boundaries but can also occur within the interior areas of a tectonic plate. Volcanic vɒlˈknɪk vɑːl- adjective relating to or caused by a volcano black volcanic sand Examples from the Corpus volcanic Eventually granite intrusions are emplaced at high levels within the mountain mass and volcanic activity develops.

While forests were being buried there was volcanic activity. Detailed definition of Compound Volcano. Volcanic ash has nothing to do with fire but is a mere definition of grain-size.

Examples are Vesuvius and Mont Pelee. 1152018 Volcanoes are Earths geologic architects. Volcano vɒlˈkeɪnəʊ vɑːlˈkeɪnoʊ noun plural volcanoes or volcanos countable HE.

Water that exists in the pore spaces of a rock or soil within the vadose zone between the ground surface and the water table. An opening in the Earths crust from which lava ash and hot gases flow or are ejected during an eruption. Earths volcanoes occur because its crust is broken into 17 major rigid tectonic plates that float on a hotter softer layer in its mantle.

Volcanic ash is the term for all fine-grained volcanic products smaller than 2 mm normally magma or older rock fragmented during explosive eruptions. Theyve created more than 80 percent of our planets surface laying the foundation that has allowed life. The definition that we start from is that a volcano is an accumulation of explosively or effusively erupted materials originating from single or multiple vents or fissures at the surface of the Earth or other planets.

A volcanic eruption is. Examples are Vesuvius and Mont Pelee. A mountain with a large hole at the top through which lava very hot liquid rock is sometimes forced out Pompei was destroyed when the volcano erupted in 79 AD.

Volcano vent in the crust of Earth or another planet or satellite from which issue eruptions of molten rock hot rock fragments and hot gases. Detailed definition of Composite Volcano Compound Volcano search for term A volcano that consists of a complex of two or more vents or a volcano that has an associated volcanic dome either in its crater or on its flanks. Volcanic ash has nothing to do with fire but is a mere definition of grain-size.

Clearly looking at the variety of options in that definition the real world does not lend itself to simple categories.

Volcanic Eruption Geology Britannica