Results 31 to 40 of about 41,648 (236)

Lithospheric mantle buoyancy: the role of tectonic convergence and mantle composition [PDF]

Scientific Reports, 2019
AbstractPlate subduction and delamination, two key processes driving plate tectonics, are thought to be controlled by the buoyancy of the lithospheric mantle relative to the underlying asthenosphere. Most mantle delamination models consider a lithospheric density higher than the asthenosphere to ensure negative buoyancy (slab pull).
K. Boonma, A. Kumar, D. Garcia-Castellanos, I. Jiménez-Munt, M. Fernández   +4 more
openaire   +3 more sources

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, I. Zabelina, I. Amanatashvili, V. Meskhia   +3 more
doaj   +1 more source

The Ability of Significant Tidal Stress to Initiate Plate Tectonics [PDF]

, 2019
Plate tectonics is a geophysical process currently unique to Earth, has an important role in regulating the Earth's climate, and may be better understood by identifying rocky planets outside our solar system with tectonic activity.
Triaud, Amaury H. M. J., Zanazzi, J. J.
core   +2 more sources

The development of magmatism along the Cameroon Volcanic Line: evidence from seismicity and seismic anisotropy [PDF]

, 2014
The Cameroon Volcanic Line (CVL) straddles the continent-ocean boundary in West Africa but exhibits no clear age progression. This renders it difficult to explain by traditional plume/plate motion hypotheses; thus, there remains no consensus on the ...
Bastow, I.D., Chambers, E.L., De Plaen, R.S.M., Gallacher, R.J., Keane, J., Keir, D.   +5 more
core   +1 more source

Upper- and mid-mantle interaction between the Samoan plume and the Tonga-Kermadec slabs [PDF]

, 2016
Mantle plumes are thought to play a key role in transferring heat from the core\u2013mantle boundary to the lithosphere, where it can significantly influence plate tectonics. On impinging on the lithosphere at spreading ridges or in intra-plate settings,
AM Dziewoński, AM Volpe, AMG Ferreira, C Bassin, C DeMets, D Mainprice, D Mainprice, D Mainprice, D Zhao, DL Kohlstedt, E Kaminski, ER Engdahl, FA Capitanio, G Morra, GS Robertson, H Takeuchi, H-R Wenk, J Gill, J Ritsema, J Wookey, JAD Connolly, JE Lupton, JH Woodhouse, JH Woodhouse, JH Woodhouse, KA Druken, M Bevis, M Faccenda, M Faccenda, M Faccenda, M Gurnis, MG Jackson, ML Lytle, MS Thorne, N Schmerr, OL Anderson, P Carrez, P Cordier, PG Betts, PG Betts, R Hall, RJ Poreda, S Turner, S-J Chang, S-J Chang, SR Hart, SW French, UR Christensen, W Rodi, W-P Chen, WG Mason, WP Schellart, WP Schellart, Y Fukao, Y Lagabrielle   +54 more
core   +2 more sources

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, D. R. Stegman, P. J. Tackley   +2 more
doaj   +1 more source

Post-collisional Tertiary–Quaternary mafic alkalic magmatism in the Carpathian–Pannonian region: a review [PDF]

, 2004
Mafic alkalic volcanism was widespread in the Carpathian–Pannonian region (CPR) between 11 and 0.2 Ma. It followed the Miocene continental collision of the Alcapa and Tisia blocks with the European plate, as subduction-related calc-alkaline magmatism was
Albarede, Aldanmaz, Alexandru Szakács, Balogh, Balogh, Balogh, Balogh, Blusztajn, Campbell, Cebria, Class, Csontos, Csontos, Dobosi, Dobosi, Dobosi, Downes, Downes, Downes, Ebner, Embey-Isztin, Embey-Isztin, Embey-Isztin, Fodor, Granet, Gîrbacea, Harangi, Harangi, Harangi, Harangi, Hilary Downes, Hofmann, Horváth, Höernle, Ioan Seghedi, Jung, Kadosa Balogh, Konečny, Konečny, Mason, Mason, Maţenco, McKenzie, Orlando Vaselli, Pécskay, Pécskay, Rosenbaum, Royden, Royden, Roşu, Salters, Seghedi, Seghedi, Seghedi, Seghedi, Seghedi, Shaw, Sims, Späth, Späth, Sun, Szabó, Szabó, Szakács, Tatsumi, Thirlwall, Thirlwall, Vaselli, Wedepohl, Wilson, Wilson, Wöerner, Zindler, Zoltán Pécskay, Zou, Šimon   +75 more
core   +1 more source

Global Whole Lithosphere Isostasy: Implications for Surface Elevations, Structure, Strength, and Densities of the Continental Lithosphere

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, James D. P. Moore, Marta Perez‐Gussinye, Tim Stern   +3 more
doaj   +1 more source

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
doaj   +1 more source

Strong Physical Contrasts Across Two Mid‐Lithosphere Discontinuities Beneath the Northwestern United States: Evidence for Cratonic Mantle Metasomatism

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
doaj   +1 more source