Results 31 to 40 of about 552,470 (226)
Mantle melting versus mantle metasomatism – “The chicken or the egg” dilemma
, 2017 Most eclogitic mantle xenoliths brought to the surface exhibit a certain degree of enrichment with incompatible elements, usually attributed to the effect of mantle metasomatism by a putative metasomatic fluid.
E. Kiseeva +3 more
semanticscholar +1 more source
, 2016 We report major, trace, and volatile element (CO2, H2O, F, Cl, S) contents and Sr, Nd, and Pb isotopes of mid-ocean ridge basalt (MORB) glasses from the Northern East Pacific Rise (NEPR) off-axis seamounts, the Quebrada-Discovery-GoFar (QDG) transform ...
K. Shimizu +7 more
semanticscholar +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Recommended mineral-melt partition coefficients for FRTEs (Cu), Ga, and Ge during mantle melting
, 2015 First-row transition element (FRTE) concentrations in primitive mantle-derived melts have been used as direct indicators of mantle source mineralogy (e.g., Ti, Mn, Fe, Co, Ni, Zn) and as proxies to trace the oxidation state of the mantle (e.g., Sc, V, Cu,
V. Le Roux, R. Dasgupta, Cin-Ty A. Lee
semanticscholar +1 more source
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Earth and Planetary PhysicsCarbonate minerals are key carriers of carbon into the Earth’s interior, yet their stability and melting behavior under lower mantle conditions remain incompletely constrained.
ZhongShan He +5 more
doaj +1 more source
Melt mapped inside Earth’s mantle
Nature, 2020 An analysis of seismic data reveals the location and quantity of melted rock, known as melt, in Earth’s upper mantle. The results show how these factors are correlated with the movement of the planet’s tectonic plates.
openaire +2 more sources