Results 41 to 50 of about 23,662 (266)
Geochemical Consequences of Melt Percolation: The Upper Mantle as a Chromatographic Column [PDF]
, 1987 As magmas rise toward the surface, they traverse regions of the mantle and crust with which they are not in equilibrium; to the extent that time and the intimacy of their physical contact permit, the melts and country rocks will interact chemically. We
Navon, Oded, Stolper, Edward
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Записки Горного института, 2023 3D analysis of the magma transport and accumulation mechanism in the structure and basement of the Klyuchevskoy volcano preceding 11 eruptions in 2003-2021 has been performed.
Aleksei V. Kiryukhin +3 more
doaj
Seismic Imaging of a Magma Chamber and Melt Recharge of the Dormant Datong Volcanoes
Earth and Space Science, 2021 The Datong volcanoes erupted episodically from ca. 0.74 to ca 0.10 Ma with the last eruption at ca. 100 ka, and ever since has remained dormant. It remains elusive whether the Datong volcanoes are being recharged and would become active again in the near
Lipeng He +4 more
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Magma chamber formation by magma intrusion into the Earth’s crust
Computational Continuum Mechanics, 2018 <p>The main mechanism of transport of magma in the Earth&#8217;s crust is the formation of cracks, or dikes, through which the melt moves towards the surface under the action of buoyancy forces and tectonic stresses.
Ivan Utkin, Oleg Melnik
openaire +2 more sources
PEMODELAN 3D STRUKTUR BAWAH PERMUKAAN GUNUNGAPI AGUNG PROVINSI BALI MENGGUNAKAN METODE GAYA BERAT
JGE, 2020 Under surface structure, 3d modelling of Agung volcano in Bali had been conducted by using gravity methods. This research aims to identify the magma chamber and make a model below the surface of the Great Volcano of Bali Province by using gravity anomaly
Nasyratul Ilmi, Karyanto Karyanto
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Deep Underground Science and Engineering, EarlyView.The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza +3 more
wiley +1 more source
Fossilized solidification fronts in the Bushveld Complex argue for liquid-dominated magmatic systems
Nature Communications, 2020 Magma storage zones are debated to either be crystal-dominated mush zones or large liquid-dominated magma chambers. Here, the authors discover fossilized solidification fronts of magnetitite in the Bushveld pluton, which indicate nucleation and crystal ...
Willem Kruger, Rais Latypov
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High‐Titanium Zircon Rims in Rhyolite – A Reflection of Adiabatic Ascent?
Geological Journal, EarlyView.The ascent of granitic magma from source to emplacement is rapidly achieved through dyking, resulting in negligible heat loss to the surrounding wallrock (i.e., adiabatic). Zircon growth during ascent can record the changing magma conditions including adiabatic cooling and heating, resulting in high titanium rims on low titanium cores without ...
Carson Kinney +2 more
wiley +1 more source
Exploring the Roots of a Massive Volcanic Eruption - Geochemical Comparison of Intrusive Rocks and Overlying Volcanic Rocks [PDF]
, 2014 Understanding the relationship between magma chambers and erupted volcanic rocks will aid us in understanding the growth and evolution of magma bodies that are capable of producing violent, destructive volcanic eruptions.
Robert, Joseph
core
Geological Journal, EarlyView.Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito +8 more
wiley +1 more source