Results 81 to 90 of about 112,950 (202)

Global correlation of lower mantle structure and past subduction [PDF]

, 2016
Advances in global seismic tomography have increasingly motivated identification of subducted lithosphere in Earth's deep mantle, creating novel opportunities to link plate tectonics and mantle evolution.
Wim Spakman, Mantle dynamics & theoretical geophysics, Trond H. Torsvik, Pavel V. Doubrovine, Torsvik, Trond H., Doubrovine, Pavel V., Bull, A.L., Domeier, M., Spakman, W., Abigail L. Bull, Mathew Domeier   +10 more
core   +1 more source

METASOMATIC AND MAGMATIC PROCESSES IN THE MANTLE LITHOSPHERE OF THE BIREKTE TERRAIN OF THE SIBERIAN CRATON AND THEIR EFFECT ON THE LITHOSPHERE EVOLUTION

Геодинамика и тектонофизика, 2015
The area of studies covers the north-eastern part of the Siberian craton (the Birekte terrain), Russia. The influence of metasomatic and magmatic processes on the mantle lithosphere is studied based on results of analyses of phlogopite- and phlogopite ...
Lidia V. Solov’eva, Tatiana V. Kalashnikova, Sergei I. Kostrovitsky, Alexei V. Ivanov, Stanislav S. Matsuk, Ludmila F. Suvorova   +5 more
doaj   +1 more source

Petrogenetic processes in the ultramafic, alkaline and carbonatitic magmatism in the Kola Alkaline Province: a review [PDF]

, 2005
Igneous rocks of the Devonian Kola Alkaline Carbonatite Province (KACP) in NW Russia and eastern Finland can be classified into four groups: (a) primitive mantle-derived silica-undersaturated silicate magmas; (b) evolved alkaline and nepheline syenites; (
Balaganskaya, Elena, Demaiffe, Daniel, Beard, Andrew D., Demaiffe, D., Beard, Andrew, Downes, Hilary, Balaganskaya, E., Beard, Andy, Liferovich, R., Liferovich, Ruslan   +9 more
core   +1 more source

Transformation of subcontinental lithospheric mantle through peridotite-melt reaction: Evidence from a highly fertile mantle xenolith from the North China craton

, 2007
A highly fertile mantle xenolith entrained in the Upper Cretaceous Daxizhuang basalt, Shandong Province, China provides petrological evidence for reaction between basaltic melt and refractory peridotite in Mesozoic lithospheric mantle beneath the eastern
Niu, LF, Nakamura, E, Ying, JF, Zhang, HF, Sun, M, Kobayashi, K, Zhang, J, Tang, YJ   +7 more
core   +1 more source

Coupling thermodynamic mineralogical models and mantle convection [PDF]

, 2007
In this thesis I advance the integration of mineral thermodynamics into convection modeling. I have compiled a thermodynamic model of mantle mineralogy in the five component CFMAS system (CaO-FeO-MgO-Al2O3-SiO2), including mineral phases that occur close
Piazzoni, Antonio Sebastiano
core   +1 more source

The energetics of melting fertile heterogeneities within the depleted mantle [PDF]

To explore the consequences of mantle heterogeneity for primary melt production, we develop a mathematical model of energy conservation for an upwelling, melting body of recycled oceanic crust embedded in the depleted upper mantle.
Katz, R. F., Rudge, John F.
core   +1 more source

Modification of the lithospheric stress field by lateral variations in plate-mantle coupling [PDF]

, 2009
The presence of deeply penetrating continental roots may locally increase the magnitude of basal shear tractions by up to a factor of 4 compared to a layered viscosity structure.
Naliboff, JB, Naliboff, J. B., Conrad, CP, Conrad, C. P., Lithgow-Bertelloni, C, Lithgow‐bertelloni, C.   +5 more
core   +1 more source

Peridotite pyroxenite and granulite xenoliths from Cenozoic Shavaryn Tsaram volcanic center (Mongolia): New data

Geosystems and Geoenvironment
Mantle lherzolites (spinel- and garnet-bearing), megacrysts and pyroxenites from Moho and lower crust xenoliths of the Cenozoic basalts of Shavaryn-Tsaram volcanic center were newly studied by the EPMA, SEM and LA-ICP methods to define more precisely ...
I.V. Ashchepkov, A.A. Tsygankov, G.N. Burmakina   +2 more
doaj   +1 more source

Large-scale adaptive mantle convection simulation [PDF]

A new generation, parallel adaptive-mesh mantle convection code, Rhea, is described and benchmarked. Rhea targets large-scale mantle convection simulations on parallel computers, and thus has been developed with a strong focus on computational efficiency
Wilcox, Lucas C., Gurnis, Michael, Ghattas, Omar, Burstedde, Carsten, Tan, Eh, Alisic, Laura, Stadler, Georg   +6 more
core   +1 more source

Xenolith Constraints on the Mantle Potential Temperature and Thickness of Cratonic Roots Through Time

Geophysical Research Letters
The temperature of the convecting mantle and thickness of the lithosphere control many of Earth's processes. However, there is disagreement regarding the evolution of these quantities through time.
Z. J. Sudholz, A. Copley
doaj   +1 more source