Abstract A high‐resolution 3D crustal and upper‐mantle shear‐wave velocity model of Northeast China is established by joint inversion receiver functions fundamental‐mode Rayleigh wave phase velocities. The teleseismic data used to calculate are collected from 107 CEA permanent sites 118 NECESSArray portable stations. dispersion measurements extracted an independent tomographic study. Our exhibi...

The Cenozoic Hannuoba basaltic province, 200 km northwest of Beijing, China, is composed of intercalated tholeiitic, transitional and alkalic basalts. Although the alkalic basalts contain abundant upper mantle xenoliths, they range in MgO content from 5.7 to 10.6% MgO. Most of the major and trace element abundance variations in the alkalic basalts can be explained by segregation of a clinopyrox...

The tectonic evolution of the southeastern Tibetan Plateau is key to understanding mechanism growth whole Plateau. Its imprint on lithospheric and asthenospheric mantle rock fabrics expected have a strong signature seismic anisotropy. In this study, we measure splitting delays fast polarization directions (FPD) with minimum-transverse-energy intensity methods using core-refracted phases (e.g., ...

Ultraslow spreading ridges form the slowest divergent plate boundaries and exhibit distinct processes in volcanically active magmatic sections intervening amagmatic sections. Local seismicity studies of ultraslow until now cover only parts segments give insight into at confined locations. Here, we present a microseismicity data set that allows to study on scale entire segments. Our network 26 o...

Abstract Renewable energy sources are key to achieve the transition toward clean system. Among them, geothermal has a production whose effectiveness requires sufficient understanding of temperature distribution and fluid circulation at depth, as well lithological petrophysical properties crust. The focus this paper is twofold: first, we summarize main advances in development new methodologies n...

Abstract The Australian continental crust preserves a rich geological history, but it is unclear to what extent this history expressed deeper within the mantle. Here an investigation of Quasi-Love waves performed detect scattering seismic surface at mantle depths (between 100–200 km) by lateral gradients in anisotropy. Across Australasia 275 new observations are presented. inferred source and a...

the targeted area of this research includes e anatoly, nw zagros, and caucasus. these structures are known as a complex and active area and in the early stage of continent-continent collision, which give us unique possibility to monitor such collision in real time. therefore, it is very important to study this active area to have a better knowledge about its tectonic behavior and lithospheric s...

a r t i c l e i n f o a b s t r a c t Isostatic and dynamic models of Earth's surface topography can provide important insights into the driving processes of tectonic deformation. We analyze these two estimates for the tectonically-active western United States using refined structural models derived from EarthScope USArray. For the crust, use of recent Moho depth measurements and crustal densit...

W e consider a series of simple calculations with a step-function change in thickness of the lithosphere and imposed, far-field boundary conditions to illustrate the influence of the lithosphere on mantle flow. We consider the effect of aspect ratio and far-field boundary conditions on the small-scale flow driven by a discontinuity in the thickness of the lithosphere. In an isothermal mantle, w...