Results 21 to 30 of about 2,719 (188)
Southern Africa crustal anisotropy reveals coupled crust-mantle evolution for over 2 billion years
Nature Communications, 2019 The long-term stability of Precambrian continental lithosphere depends on the rheology of the lithospheric mantle as well as the coupling between crust and mantle lithosphere.
H. Thybo, M. Youssof, I. M. Artemieva
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The Relationship Between Kimberlitic Magmatism and Electrical Conductivity Anomalies in the Mantle
Geophysical Research Letters, 2022 Kimberlites are igneous rocks whose formation remains enigmatic due to their severely altered nature, highly variable compositions and rapid ascent through the lithosphere.
Sinan Özaydın, Kate Selway
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Geochemistry, Geophysics, Geosystems, 2020 The timing and mechanism of formation of the Tibet Plateau remain elusive, and even the present‐day structure of the Tibetan lithosphere is hardly resolved, due to conflicting interpretations of the geophysical data.
Fanny Goussin +10 more
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Lithospheric Thinning by Mantle Plumes [PDF]
ASEG Extended Abstracts, 2016 Thermo-mechanical thinning of the lithosphere by mantle plumes is essential for intra-plate volcanism, the initiation of rifting, the evolution of Earth’s lower continental crust and the genesis of metals, diamonds and hydrocarbons. To develop a new understanding of how a mantle plume thins the overlying lithosphere beneath moving plates, we use 2-D ...
Manon Dalaison, Rhodri Davies
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Nature of orogenesis and volcanism in the Caucasus region based on results of regional tomography [PDF]
Solid Earth, 2012 In the paper, we discuss the problem of continental collision and related volcanism in the Caucasus and surrounding areas based on the analysis of the upper mantle seismic structure in a recently derived model by Koulakov (2011).
I. Koulakov +3 more
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AGU Advances, 2023 Mid‐lithosphere discontinuities are seismic interfaces likely located within the lithospheric mantle of stable cratons, which typically represent velocities decreasing with depth.
Tianze Liu, Emily J. Chin, Peter Shearer
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Making Cratonic Lithospheric Mantle [PDF]
Journal of Geophysical Research: Solid Earth, 2018 AbstractThe origin of cratonic lithospheric mantle has been attributed to either high‐pressure (5–7 GPa) melting in hot mantle plumes or low‐pressure (<5 GPa) melting in mid‐ocean ridges or suprasubduction zones. To resolve this long‐standing debate, it is necessary to confirm under what depths the incipient cratonic mantle melted.
Bin Su, Yi Chen
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Geochemistry, Geophysics, Geosystems, 2020 The observed variations in the thickness of the conductive lithosphere, derived from surface wave studies, have a first‐order control on the elevation of the continents, in addition to variations in the thickness of the crust—this defines whole ...
Simon Lamb +3 more
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A numerical model for the gravimetric recovery of sub-lithospheric mantle structures
Geodesy and Geodynamics, 2020 It is a well-known fact that the long-wavelength terrestrial geoid undulations are mainly attributed to deep mantle density heterogeneities, while more detailed features in the geoid geometry are associated with the topography and the lithospheric ...
Robert Tenzer
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The subduction dichotomy of strong plates and weak slabs [PDF]
Solid Earth, 2017 A key element of plate tectonics on Earth is that the lithosphere is subducting into the mantle. Subduction results from forces that bend and pull the lithosphere into the interior of the Earth.
R. I. Petersen +2 more
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