Concept cluster: Biology > Volcanology
n
(geology) An igneous rock that crystallized at considerable depth in the crust; plutonic rock.
n
(geology) A rounded mass of secondary mineral found in volcanic rock.
n
(geology) compaction of a stratum due to its own weight
n
A porous or hollow carbonaceous sphere-like particle formed during pyrolysis or in the course of the combustion of coal.
n
(volcanology) A conical deposit of rock fragments around a volcano.
adj
Of the nature of a (volcanic) crater
n
volcanic ash that is hidden under other strata
n
(geology) Large rock fragments left by a melting glacier etc.
n
(geology) A rock moved from one location to another, usually by a glacier.
n
The eruption of molten lava from a volcanic vent.
n
(volcanology) A volcanic eruption which occurs on the flanks of a volcano, rather than its summit.
n
(geology, planetology) The surface manifestation of a plume of molten material that rises from deep in a celestial body's mantle.
n
(geology) one of the major groups of rock that makes up the crust of the Earth; formed by the cooling of molten rock, either below the surface (intrusive) or on the surface (extrusive)
n
(geology) A sediment formed by the redeposition of material erodes from an original deposit.
n
(geology) Magma forced into other rock formations; the rock formed when such magma solidifies.
n
Synonym of volcanic bomb
n
(geology) a large body of igneous rock within which distinct stratification continues over many miles
n
(geology) a mass of volcanic or igneous rock found within strata which has spilled downward into underlaying strata and forms depressed regions.
n
(geology) The molten matter within the earth, the source of the material of lava flows, dikes of eruptive rocks, etc.
n
(geology) A destructive, turbulent, incandescent mass of particles enveloped in gas produced by the eruption of a volcano
n
(geology) A lens-shaped mass that occurs in an anticlinal crest or synclinal trough.
n
(volcanology) Any rock formed by the accumulation of fragmented volcanic material (pyroclasts) ejected during explosive eruptions.
n
(volcanology) A large volcano, with shallow-sloping sides and a flattened dome, formed of successive eruptions of free-flowing lava from fissure vents.
n
(geology) The lower layer of the earth's outer crust that underlies the sial and is rich in silica, iron, and magnesium.
n
(volcanology) A tall conical volcano, composed of layers (or strata) of hardened lava, tephra and ash.
adj
Describing a volcanic eruption characterized by a fiery fountain of lava from a single, central crater
n
A hypothetical volcanic eruption event, caused by a buildup of gas, which launches material from the crust and mantle into a sub-orbital trajectory, leading to further damage as it crashes back to the surface.
n
Air pollution caused by substances (such as sulphur dioxide) emitted by a volcano.
n
(geology) Fragments of pulverized rock, minerals and volcanic glass created during a volcanic eruption.
n
(volcanology) A tephra, larger than 64 mm (2.5 inches) in diameter, formed when a volcano ejects viscous fragments of lava during an eruption.
n
A column of igneous rock formed by congelation of lava in the conduit of a volcano and later exposed by the removal of surrounding rocks.
n
(climatology) A reduction in global temperatures caused by volcanic ash and droplets of sulfuric acid obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large particularly explosive volcanic eruption.

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