Results 41 to 50 of about 1,865,929 (246)

Upper Mantle Anisotropic Shear Velocity Structure at the Equatorial Mid‐Atlantic Ridge Constrained by Rayleigh Wave Group Velocity Analysis From the PI‐LAB Experiment

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, Catherine Rychert, Nicholas Harmon, J. M. Kendall   +3 more
doaj   +1 more source

Stepwise Lithospheric Delamination Leads to Pulsed Cenozoic Uplifts of Central Tien Shan

Lithosphere, 2022
The Tien Shan provides an ideal site to study mechanism of intracontinental orogeny due to distant effect of Indo-Asian collision. We investigate lithospheric structures, in particular the lithosphere-asthenosphere boundary (LAB), of Central Tien Shan ...
Haixiang Zhao, Zhouchuan Huang, Xiaohui Yuan   +2 more
doaj   +1 more source

3-D multiobservable probabilistic inversion for the compositional and thermal structure of the lithosphere and upper mantle: III. Thermochemical tomography in the Western-Central U.S. [PDF]

, 2016
Acknowledgments We are indebted to F. Darbyshire and J. von Hunen for useful comments on earlier versions of this work. This manuscript benefited from thorough and constructive reviews by W. Levandowski and an anonymous reviewer.
Aoki K., Biegler L., Coltorti M., Eggler D. H., Evans J. R., Gerya T., Kitanidis P. K., Quarteroni A., Turcotte D. L., Van Decar J. C., Winter J. D.   +10 more
core   +2 more sources

Melting of recycled ancient crust responsible for the Gutenberg discontinuity

Nature Communications, 2020
The seismic Gutenberg discontinuity has long been associated with the lithosphere-asthenosphere boundary, yet the physical explanation of what is causing the discontinuity remains debated.
Jia Liu, Naoto Hirano, Shiki Machida, Qunke Xia, Chunhui Tao, Shili Liao, Jin Liang, Wei Li, Weifang Yang, Guoying Zhang, Teng Ding   +10 more
doaj   +1 more source

The application of a gravimetric forward modelling of the lithospheric structure for an estimate of the average density of the upper asthenosphere

Geodesy and Geodynamics, 2019
The average density of 3300 kg m−3 is often attributed for the asthenosphere. In this study, we inspect this value by estimating the average value of the (upper) asthenosphere based on applying the gravimetric forward modelling of major known ...
Wenjin Chen, Robert Tenzer
doaj   +1 more source

Tectonic significance of changes in post-subduction Pliocene-Quaternary magmatism in the south east part of the Carpathian-Pannonian Region [PDF]

, 2010
The south-eastern part of the Carpathian–Pannonian region records the cessation of convergence between the European platform/Moesia and the Tisza–Dacia microplate.
Alexandru Szakács, Bada, Balla, Behrmann, Bertotti, Burov, Chalot-Prat, Ciulavu, Cloetingh, Cloetingh, Csontos, Defant, Demetrescu, Demetrescu, Downes, Duggen, Dérerova, Embey-Isztin, Embey-Isztin, Faccenna, Faccenna, Fielitz, Fodor, Fuchs, Gméling, Gröger, Gvirtzman, Gîrbacea, Gîrbacea, Harangi, Harangi, Harangi, Harangi, Hauser, Heidbach, Hilary Downes, Horváth, Horváth, Houseman, Ioan Seghedi, Ismail-Zadeh, Ivan, Jarosinski, Knapp, Konečný, Krézsek, Leever, Linzer, Liviu Maţenco, Lustrino, Martin, Mason, Mason, Mason, Maţenco, Maţenco, Maţenco, Mo, Morley, Negrete-Aranda, Nemčok, Nemčok, Oncescu, Oncescu, Pallares, Panaiotu, Paul R.D. Mason, Peccerillo, Peccerillo, Pharaoh, Pinter, Plašienka, Popa, Pécskay, Pécskay, Rosenbaum, Royden, Royden, Roşu, Russo, Sacks, Sanders, Schmid, Schott, Seghedi, Seghedi, Seghedi, Seghedi, Seghedi, Seghedi, Seghedi, Seghedi, Sperner, Szakács, Szakács, Szakács, Szakács, Szakács, Săndulescu, Săndulescu, Tari, Tari, Turner, Tărăpoancă, Ustaszewski, Vaselli, Vasiliev, Vinkler, Wenzel, Wortel, Xiao, Ziegler, Zoltán Pécskay   +112 more
core   +2 more sources

Is There a Global Carbonate Layer in the Oceanic Mantle?

Geophysical Research Letters, 2021
Previous modeling of carbonate subduction by high‐pressure experimentation has allowed to propose scenarios for bulk carbon return to the mantle, but the detailed transfer mechanisms have seldom been studied.
T. Hammouda, G. Manthilake, P. Goncalves, J. Chantel, J. Guignard, W. Crichton, F. Gaillard   +6 more
doaj   +1 more source

Convergent flow in a two-layer system and mountain building [PDF]

, 2010
With the purpose of modelling the process of mountain building, we investigate the evolution of the ridge produced by the convergent motion of a system consisting of two layers of liquids that differ in density and viscosity to simulate the crust and the
Gratton, Julio, Perazzo, Carlos Alberto
core   +4 more sources

The Hudson Bay Lithospheric Experiment (HuBLE) : Insights into Precambrian Plate Tectonics and the Development of Mantle Keels [PDF]

, 2015
The UK component of HuBLE was supported by Natural Environment Research Council (NERC) grant NE/F007337/1, with financial and logistical support from the Geological Survey of Canada, Canada–Nunavut Geoscience Office, SEIS-UK (the seismic node of NERC ...
Bastow, I. D., Darbyshire, F. A., Eaton, D. W., Helffrich, G., Kendall, J.-M., Pawlak, A. E., Snyder, D. B., Thompson, D. A., Wookey, J.   +8 more
core   +2 more sources

A New View of Shear Wavespeed and the Lithosphere‐Asthenosphere Boundary in the Southwestern United States

Journal of Geophysical Research: Solid Earth
The Southwestern United States experiences active deformation, seismicity, and magmatism, remarkable in an intraplate setting. The Basin and Range and Colorado Plateau (CP) are inferred to differ in lithospheric thickness, but modeling geophysical ...
E. Golos, B. Brunsvik, Z. Eilon, K. Fischer, J. Byrnes, J. Gaherty, AL Golos   +6 more
semanticscholar   +1 more source