Results 31 to 40 of about 22,070 (265)
Geochemistry, Geophysics, Geosystems, 2021 The evolution of ocean lithosphere and asthenosphere are fundamental to plate tectonics, yet high resolution imaging is rare. We present shear wave velocity and azimuthal anisotropy models for the upper mantle from Rayleigh wave group velocities from ...
Utpal Saikia +3 more
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Seismic anisotropy across Adria plate, from the Apennines to the Dinarides
Frontiers in Earth Science, 2022 The Adria microplate has the particular feature to be involved in two subduction systems with slab dipping in opposite directions, one toward west beneath the Apennines and the other to the east beneath the Dinarides.
S. Salimbeni +6 more
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Deep lithospheric dynamics beneath the Sierra Nevada during the Mesozoic and Cenozoic as inferred from xenolith petrology [PDF]
, 2001 Peridotite xenoliths erupted in late Miocene basalts (~8 Ma) in the central Sierra Nevada sample a lithosphere that is vertically stratified in terms of age and thermal history.
Brimhall, George H., Jr. +2 more
core +1 more source
Annals of Geophysics, 1999 The separation of the field produced by different internal sources can be accomplished by means of the so-called spatial spectrum of the geomagnetic field of internal origin.
X. Q. Gao +3 more
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The westward drift of the lithosphere. A tidal ratchet? [PDF]
, 2018 Is the westerly rotation of the lithosphere an ephemeral accidental recent phenomenon or is it a stable process of Earth’s geodynamics? The reason why the tidal drag has been questioned as the mechanism determining the lithospheric shift relative to ...
Carcaterra, A., Doglioni, C.
core +2 more sources
Геодинамика и тектонофизика, 2015 A comparative study of major elements, trace elements, and isotopes in high- and moderate-Mg volcanic sequences of 16–14 and 14–13 Ma, respectively, has been performed in the Bereya volcanic center.
I. S. Chuvashova +5 more
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Geochemistry, Geophysics, Geosystems, 2021 The style of convective force transmission to plates and strain‐localization within and underneath plate boundaries remain debated. To address some of the related issues, we analyze a range of deformation indicators in southern California from the ...
Vera Schulte‐Pelkum +3 more
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The transition zone as a host for recycled volatiles: Evidence from nitrogen and carbon isotopes in ultra-deep diamonds from Monastery and Jagersfontein (South Africa) [PDF]
, 2017 Sublithospheric (ultra-deep) diamonds provide a unique window into the deepest parts of Earth's mantle, which otherwise remain inaccessible. Here, we report the first combined C- and N-isotopic data for diamonds from the Monastery and Jagersfontein ...
Gurney, J.J. +6 more
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Geophysical model of the mantle ore-forming system
Геофизический журнал, 2019 The paper deals with a generalized geophysical model of the mantle ore-forming system that covers three main parts: a) the area of origin of the ore substance; b) its transportation zone and c) the area of concentrated ore-formation ― a deposit.
D. Yosifov, R. Radichev
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Sub‐Lithospheric Small‐Scale Convection Tomographically Imaged Beneath the Pacific Plate
Geophysical Research Letters, 2022 Small‐scale convection beneath the oceanic plates has been invoked to explain off‐axis nonplume volcanism, departure from simple seafloor depth‐age relationships, and intraplate gravity lineations.
Zachary C. Eilon +4 more
doaj +1 more source