Results 31 to 40 of about 4,719 (167)
Геодинамика и тектонофизика, 2021 We propose a model of decompression melting, separation, migration and freezing of the melt in the upper mantle during the convective instability process.
B. V. Lunev, V. V. Lapkovsky
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Frontiers in Earth Science, 2018 In this second installment of a series that aims to investigate the dynamic interaction between the composition and abundance of the solid mantle and its melt products, the classic interpretation of fractional melting is extended to account for the ...
Massimiliano Tirone
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Petrogenesis and tectonic significance of mafic–ultramafic rocks from Southwest Yunnan, China
Comptes Rendus. Géoscience, 2020 This study focuses on the mafic–ultramafic lavas of the Early Carboniferous outcrop in Mangxin, southwestern Yunnan, China. Picrites with 26–32 wt% MgO and a quenched texture are the most significant components of this rock association.
Shi, Qing, Fang, Nianqiao
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Rapid transition from primary to secondary crust building on the Moon explained by mantle overturn
Nature Communications, 2023 Geochronology indicates a rapid transition (tens of Myrs) from primary to secondary crust building on the Moon. The processes responsible for initiating secondary magmatism, however, remain in debate.
Tabb C. Prissel +3 more
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Dehydration Melting Below the Undersaturated Transition Zone
Geochemistry, Geophysics, Geosystems, 2020 A reflector 70–130 km below the base of the transition zone beneath Tibet is observed in receiver functions and underside seismic reflections, at depths consistent with the transition of garnet to bridgmanite.
W. R. Panero +5 more
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The Meaning of Pressure for Primary Magmas: New Insights From PRIMELT3‐P
Geochemistry, Geophysics, Geosystems, 2023 This paper reports new software, PRIMELT3‐P, for computing the pressure and temperature range over which a primary basaltic magma was formed by adiabatic decompression and fractional melting of fertile mantle peridotite.
Claude T. Herzberg +2 more
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Geochemistry and Structure of Krakatoa Volcano in the Sunda Strait, Indonesia
Geosciences, 2018 The violent eruption of Krakatoa Volcano located in the Sunda Strait, Indonesia, in 1883 represents one of the deadliest eruptions in human civilization.
Mirzam Abdurrachman +3 more
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Swiss Journal of Geosciences, 2023 In the Gasht-Masuleh area in the Alborz Mountains, gabbroic magma intruded Palaeozoic metasediments and Mesozoic sediments and crystallised as isotropic and cumulate gabbros.
Leila Rezaei +8 more
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Do Olivine Crystallization Temperatures Faithfully Record Mantle Temperature Variability?
Geochemistry, Geophysics, Geosystems, 2021 Crystallization temperatures of primitive olivine crystals have been widely used as both a proxy for, or an intermediate step in calculating, mantle temperatures. The olivine‐spinel aluminum‐exchange thermometer has been applied to samples from mid‐ocean
Simon Matthews +4 more
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Geochemistry, Geophysics, Geosystems, 2008 Geochemical variations within the young Hawaiian Islands occur in two particularly prominent forms: differences between volcanic stages and differences between the “Loa” and “Kea” subchains.
Todd Anthony Bianco +4 more
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