Results 21 to 30 of about 36,579 (273)
Frontiers in Earth Science, 2020 Large volcanic eruptions are frequently triggered by the intrusion of hot primitive magma into a more evolved magma-chamber or -mush zone. During intrusion into the cooler mush zone, the basaltic magma undergoes crystallization, which in turn can release
Stephan Kolzenburg +5 more
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Geochemistry, Geophysics, Geosystems, 2022 Many andesites erupted at arc volcanoes are the products of magma mixing, and this process could be important in triggering their eruption. Throughout the life of Ngauruhoe volcano (∼2.5 ka), erupted andesites lack macroscopic enclaves or lithological ...
Kate Cocker +4 more
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The First 10 Million Years of Rear‐Arc Magmas Following Backarc Basin Formation Behind the Izu Arc
Geochemistry, Geophysics, Geosystems, 2020 IODP Site U1437 is located in the Izu rear‐arc region, approximately 330 km west of the Izu‐Bonin trench axis. The oldest four units (Units IV through Unit VII) include volcaniclastic sediment and in situ hyaloclastites.
T. Miyazaki +10 more
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On the mechanism of interaction between strong earthquakes and volcanism in subduction zones
Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2022 The relationship between strong earthquakes and powerful volcanism in subduction zones are discussed. It is shown that abnormally strong earthquakes or a group of strong earthquakes and powerful volcanic events or volcanic activation of large areas can ...
Rebetsky Yu.L., Stefanov Yu.P.
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Composición química (elementos mayores) de los magmas en el Cinturón Volcánico Mexicano
Geofísica Internacional, 1987 Se presenta una recopilación de 1797 análisis geoquímicos de elementos mayores sobre las rocas ígneas del Cinturón Volcánico Mexicano (CVM). Se analiza el significado geológico de estos datos geoquímicos mediante una serie de histogramas y diagramas ...
V. H. Aguilar y Vargas, S. P. Verma
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Thick crust, hydrous magmas, and the paradox of voluminous cold magmatism
Volcanica, 2021 Andesites are refined and “cold” magmas compared to their basaltic parents, yet large volumes of andesites are generated at continental arcs. We show that large andesitic plutons are favored when arc crust attains a thickness of ~60 km while mafic ...
Cin-Ty Lee, Boda Liu
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Eos, Transactions American Geophysical Union, 1991 What are the processes that drive magmatic diversity? How is it that volcanic centers can exist for millions of years erupting a variety of chemical types? What are the means by which large batholithic complexes become assembled? Magmas (silicate melts)differ from other geophysical fluids, such as oceans and atmospheres, in that their physiochemical ...
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Felsic Melt and Gas Mobilization During Magma Solidification: An Experimental Study at 1.1 kbar
Frontiers in Earth Science, 2020 Melt and gas transfer processes are essential to the formation and growth of the Earth’s crust and for sustaining volcanic activity. These processes also play a major role in magma fractionation at shallow depths (<10 km) where magmas stall ...
Mattia Pistone +9 more
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Along-strike variation of structural style: Mansourabad Anticline in the Dezful Embayment, SW Iran
Results in Earth SciencesUnderstanding the governing factors that influence structural style and fault-related folding mechanisms is crucial in the Dezful Embayment, an area of ∼ 60,000 km2 which accounts for most of oil production from Iran.
Abdolvahab Afroogh +4 more
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Origin of global deep faults and their significance in Earth degasification
Мінеральні ресурси України, 2018 There are origin and formation conditions of global deep faults, their distribution patterns and also their importance in the Earth degasification from standpoint of conception of Earth Crust evolution dynamics (CECED) in article.
A. T. Akhverdiev
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