Results 81 to 90 of about 187,483 (224)

The Deep Lithospheric Structure of the South Australian Craton Revealed by Teleseismic Rayleigh Wave Tomography

Seismica
We used teleseismic Rayleigh waves recorded by three recent broadband seismic arrays in southern Australia to develop a shear wave velocity model of the South Australian Craton from the lower crust to 250 km depth and compare this with isotope data ...
John Paul O'Donnell, Kate Selway, Claire Wade, Stephan Thiel, Caroline Eakin, Robert Pickle, Shubham Agrawal, Bruce Goleby, Alexei Gorbatov   +8 more
doaj   +1 more source

Abnormal lithium isotope composition from the ancient lithospheric mantle beneath the North China Craton

Scientific Reports, 2014
Lithium elemental and isotopic compositions of olivines in peridotite xenoliths from Hebi in the North China Craton provide direct evidence for the highly variable δ7Li in Archean lithospheric mantle.
Yanjie Tang, Hong‐fu Zhang, E. Deloule, B. Su, Jifeng Ying, M. Santosh, Yan Xiao   +6 more
semanticscholar   +1 more source

Origin of Long‐Wavelength Variations in Crustal Thickness on Rocky Planets

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Long‐wavelength crustal thickness variations are observed on telluric planets, particularly on Mars and the Moon whereas Mercury appears to lack such variations. They may stem from two early‐stage positive feedback mechanisms that can emerge in stagnant‐lid planets.
Valentin Bonnet Gibet, Chloé Michaut
wiley   +1 more source

A Global Plate Model Including Lithospheric Deformation Along Major Rifts and Orogens Since the Triassic

Tectonics, 2019
Global deep‐time plate motion models have traditionally followed a classical rigid plate approach, even though plate deformation is known to be significant.
R. Müller, S. Zahirovic, Simon E. Williams, J. Cannon, M. Seton, D. Bower, M. Tetley, C. Heine, E. Le Breton, Shaofeng Liu, Samuel H. J. Russell, Ting Yang, Jonathon Leonard, M. Gurnis   +13 more
semanticscholar   +1 more source

Broadband Seismic Deployments for Imaging the Upper Mantle Structure in the Lützow-Holm Bay Region, East Antarctica

International Journal of Geophysics, 2011
Broadband seismic deployments have been carried out in the Lützow-Holm Bay region (LHB), Dronning Maud Land, East Antarctica. The recorded teleseismic and local events are of sufficient quality to image the structure and dynamics of the crust and mantle
Masaki Kanao, Yusuke Usui, Tomofumi Inoue, Akira Yamada   +3 more
doaj   +1 more source

Hydrogen‐Enhanced Grain Boundary Conductivity Explains High‐Conductivity Anomalies in Trans‐Lithospheric Shear Zones

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Magnetotelluric (MT) surveys reveal high electrical conductivity anomalies along major trans‐lithospheric shear zones. Given that trans‐lithospheric shear zones are proposed conduits for deep‐Earth volatiles, we employ molecular dynamics simulations to quantify H+ diffusivity and electrical conductivity at olivine grain boundaries.
Haoqing Wang, Kui Han, Chuanyu Zhang, Xiaofeng Tian, Xuben Wang, Simon Martin Clark   +5 more
wiley   +1 more source

LIMA U-Pb ages link lithospheric mantle metasomatism to Karoo magmatism beneath the Kimberley region, South Africa

, 2014
The Karoo igneous rocks (174–185 Ma) of southern Africa represent one of the largest continental flood basalt provinces on Earth. Available evidence indicates that Karoo magmas either originated in the asthenosphere and were extensively modified by ...
A. Giuliani, D. Phillips, R. Maas, J. Woodhead, M. Kendrick, A. Greig, R. Armstrong, D. Chew, Vadim Kamenetsky, M. Fiorentini   +9 more
semanticscholar   +1 more source

The Mantle Structure of North China Craton and Its Tectonic Implications: Insights from Teleseismic P-Wave Tomography

Journal of Marine Science and Engineering
To study the mantle structure of the North China Craton (NCC) and its tectonic implications, in particular, the evolution of the rift systems in the Trans-North China Orogen (TNCO), we used teleseismic data recorded by 250 portable seismic stations to ...
Weiqian Yu, Wei Wei, James O. S. Hammond, Cunrui Han, He Tan, Haoyu Hao   +5 more
doaj   +1 more source

Bayesian Modeling of Crustal Azimuthal Anisotropy Supports Partial Crust–Mantle Anisotropic Decoupling in a Continental Back‐Arc, Northeast China

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract How crustal deformation responds to complex mantle flow in continental back‐arc settings remains poorly constrained. Here, we develop a Bayesian working‐likelihood approach to estimate crust‐averaged azimuthal anisotropy from P‐wave receiver functions. The method separates crust‐averaged velocity anisotropy from dip‐related apparent anisotropy
Chunsen Li, Xiao Xu, Xiaoyu Guo, Xiaofei Tong, Hengcheng Ying, Lingyan Li   +5 more
wiley   +1 more source

Exhumed eo‐Alpine High‐Pressure Rocks Fed Campanian Turbidites in Eastern Sardinia

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract This study investigates the detrital record of the early orogenic evolution of the Sardinia‐Calabria system, preserved in Upper Cretaceous arenites exposed in eastern Sardinia. Sardinia and Corsica form a continental block that includes a segment of the Alpine orogen and of its former foreland basin.
Francesco Massari, Maria Giuditta Fellin, Cristina Stefani, Eva Enkelmann, Iginio Dieni, Stefano Sanchetti   +5 more
wiley   +1 more source