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Volcanic Edifices and Volcanic Deposits
2004Young volcanoes contrast with most other mountains by forming lovely cones or impressive edifices sometimes rising high above their surroundings. Even small volcanoes, which almost always occur in groups, greatly enhance the attraction of an otherwise morphologically bland landscape.
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Volcanic (Volcanic-Plutonic) Belts
1971In recent years, after the works of Ustiev and his co-workers [Ustiev, 1959, 19631, 19632, 1965; Speranskaya, 1961] on the study of the Okhotsk volcanic belt, this type of structure has gained considerable attention. The distinctive character of vulcanism, its superposition on older structural plans and its apparent independence of geosynclines, has ...
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the aeolian volcanic district volcanism and magmatism
2006The Aeolian Volcanic District is a geologically complex region characterised by a wide spectrum of volcanism and compositionally variable magmatism younger than 1-1.3 Ma. Submarine and subaerial volcanic activities formed seven large strato-volcanoes, that upraise from ~1500-2000 m b.s.l., and several seamounts.
De Astis G. +2 more
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Quaternary Volcanism of the Central Volcanic Region
New Zealand Journal of Geology and Geophysics, 1964Abstract The main rock types of the Central Volcanic Region of the North Island of New Zealand are distributed in a roughly symmetrical fashion about an axis trending north-north-east from Tongariro National Park to near Maketu on the Bay of Plenty. Adjoining the outer margins of the Region are northward-div,erging greywacke ranges, between which are ...
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Nature, 2009
A strong volcanic plume consists of a vertical column of hot gases and dust topped with a horizontal 'umbrella'. The column rises, buoyed by entrained and heated ambient air, reaches the neutral-buoyancy level, then spreads radially to form the umbrella.
Pinaki, Chakraborty +2 more
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A strong volcanic plume consists of a vertical column of hot gases and dust topped with a horizontal 'umbrella'. The column rises, buoyed by entrained and heated ambient air, reaches the neutral-buoyancy level, then spreads radially to form the umbrella.
Pinaki, Chakraborty +2 more
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2007
Volcanism is a major process whereby a planet transfers heat produced in its interior outward to the surface. Volcanic activity involving molten rock has been directly responsible for forming at least three quarters of the surface rocks of Earth and Venus, all of the surface materials of Jupiter's satellite Io, and extensive parts of the surfaces of ...
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Volcanism is a major process whereby a planet transfers heat produced in its interior outward to the surface. Volcanic activity involving molten rock has been directly responsible for forming at least three quarters of the surface rocks of Earth and Venus, all of the surface materials of Jupiter's satellite Io, and extensive parts of the surfaces of ...
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Intraplate volcanism originating from upwelling hydrous mantle transition zone
Nature, 2020Jianfeng Yang, M. Faccenda
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2012
This chapter discusses the properties of the continuous seismic signals observed during different stages of volcanic eruption and named “volcanic tremor.” The typical waveforms of these signals and their Fourier spectra are shown. The sources of volcanic tremor are located at shallow depths beneath the crater floor.
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This chapter discusses the properties of the continuous seismic signals observed during different stages of volcanic eruption and named “volcanic tremor.” The typical waveforms of these signals and their Fourier spectra are shown. The sources of volcanic tremor are located at shallow depths beneath the crater floor.
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Annual Review of Earth and Planetary Sciences, 2013
Kimberlite magmas are volatile-rich, silica-poor ultrabasic magmas originating as small-degree mantle melts at depths of 150 km or greater. Alteration and entrained xenoliths obscure their original magma chemistry and properties. Kimberlite magmas decrease temperature by a few hundred degrees during ascent.
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Kimberlite magmas are volatile-rich, silica-poor ultrabasic magmas originating as small-degree mantle melts at depths of 150 km or greater. Alteration and entrained xenoliths obscure their original magma chemistry and properties. Kimberlite magmas decrease temperature by a few hundred degrees during ascent.
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