Results 1 to 10 of about 17,229 (160)

Depletion of the upper mantle by convergent tectonics in the Early Earth [PDF]

open access: yesScientific Reports, 2021
Partial melting of mantle peridotites at spreading ridges is a continuous global process that forms the oceanic crust and refractory, positively buoyant residues (melt-depleted mantle peridotites).
A. L. Perchuk   +3 more
doaj   +2 more sources

High-pressure elastic properties of dolomite melt supporting carbonate-induced melting in deep upper mantle [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Man Xu, Zhicheng Jing, Suraj K Bajgain
exaly   +2 more sources

Speed structure of the mantle of the border of the Eastern European and West European platforms

open access: yesГеофизический журнал, 2021
This work is devoted to studying the velocity structure of the mantle of the border area of the East European and West European platforms in the crust separated by the Teiserre-Tornquist zone.
T. A. Tsvetkova   +2 more
doaj   +1 more source

Seismological reference earth model in South China (SREM-SC): Upper mantle

open access: yesFrontiers in Earth Science, 2023
This work is the mantle component of constructing the Seismological Reference Earth Model in South China (SREM-SC). Although there has been a wide range of research for imaging the upper mantle structures beneath South China, most of them focus on the ...
Qingya Tang   +5 more
doaj   +1 more source

UPPER MANTLE CONVECTION RELATED TO SUBDUCTION ZONE AND APPLICATION OF THE MODEL TO INVESTIGATE THE CRETACEOUS-CENOZOIC GEODYNAMICS OF CENTRAL EAST ASIA AND THE ARCTIC

open access: yesГеодинамика и тектонофизика, 2021
A geodynamic model of upper mantle convection related to the Pacific subduction zone is mathematically substantiated and applied to investigate the Cretaceous-Cenozoic evolution of Central East Asia (CEA) and the Arctic. We present a solution for the two-
L. I. Lobkovsky   +2 more
doaj   +1 more source

Upper-plate Shortening and Mountain-building in the Context of Mantle-driven Oceanic Subduction

open access: yesTektonika, 2023
 The mechanisms controlling mountain building at subduction zones remain debated. In particular the interaction between mantle flow and subduction has been poorly addressed while fundamental in controlling plate displacement and deformation.
Tania Habel   +5 more
doaj   +1 more source

Low‐Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation

open access: yesGeophysical Research Letters, 2023
The upper mantle is heterogeneous in Fe isotope compositions, but the origin of the heterogeneity needs understanding. Recent studies on oceanic basalts demonstrate that the upper mantle Fe isotope heterogeneity results from low‐degree melt metasomatism.
Pengyuan Guo   +7 more
doaj   +1 more source

Upper Mantle Anisotropy and Flow Beneath the Pacific Ocean Revealed by Differential PS‐SKS Splitting

open access: yesGeophysical Research Letters, 2023
Upper mantle anisotropy has been mapped beneath continents at high spatial resolution. Beneath the oceans, however, shear wave splitting constraints on upper mantle anisotropy are sparse, due to the paucity of seismic receivers. A technique that does not
Jonathan Wolf, Maureen D. Long
doaj   +1 more source

Effects of Composite Rheology on Plate‐Like Behavior in Global‐Scale Mantle Convection

open access: yesGeophysical Research Letters, 2023
Earth's upper mantle rheology controls lithosphere‐asthenosphere coupling and thus surface tectonics. Rock deformation experiments and seismic anisotropy measurements indicate that composite rheology (co‐existing diffusion and dislocation creep) occurs ...
Maëlis Arnould   +2 more
doaj   +1 more source

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