Results 71 to 80 of about 2,667 (188)

High‐Resolution Tomography for the Upper‐Mantle Structure in North China by Full‐Waveform Inversion of Teleseismic P Wave and Its Codas

open access: yesGeophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract We investigate the structure and tectonic environment in the crust and upper mantle beneath the North China Craton (NCC) by conducting a full‐waveform inversion of teleseismic P and its coda waves from densely distributed broadband seismic stations. A high‐resolution model involving P‐ and S‐wave velocities as well as density is constructed by
Xuan Zhao   +4 more
wiley   +1 more source

A Vast Valley Network Beneath the Greenland Ice Sheet

open access: yesGeophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Mapping subglacial topography along the margin of the Greenland Ice Sheet was revolutionized by reconciling measurements of ice thickness and surface velocity using the principle of mass conservation. Despite evidence that many subglacial valleys resolved by that method extend upstream, it cannot be applied to the ice sheet's slower‐flowing ...
Allison M. Chartrand   +6 more
wiley   +1 more source

Paleosecular Variation Constraints on Geomagnetic Field Morphology at ca. 1100 Ma

open access: yesGeophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Paleosecular variation provides a statistical test of long‐term geomagnetic field morphology, but its behavior across Precambrian polarity regimes remains poorly constrained. We compile a virtual geomagnetic pole dispersion data set spanning 1130–1070 Ma and apply nonlinear Model G fitting to evaluate field structure across the interval ...
Hanqing Zhao   +7 more
wiley   +1 more source

Middle Triassic transcontinental connection between the North China Craton and the Paleo-Tethys Ocean

open access: yesCommunications Earth & Environment
Middle Triassic paleogeography is essential for the paleoclimate change and ecosystem recovery after the end-Permian mass extinction, but is highly debated in the Paleo-Tethys Ocean and North China Craton, eastern Pangaea.
Heng Peng   +5 more
doaj   +1 more source

How subduction evolution drives sediment-hosted mineralisation along craton edges

open access: yesNature Communications
Sediment-hosted mineral deposits cluster near craton edges, yet the geodynamic factors influencing this concentration remain poorly understood. To investigate the tectonic and geodynamic controls on craton-edge mineralisation, we integrate a 1.8 Ga ...
Hojat Shirmard   +4 more
doaj   +1 more source

Paleogeography of the Southern Tarim Terrane Revealed by Neoproterozoic Mafic Dyke Swarm in Altyn

open access: yesGeochemistry, Geophysics, Geosystems
Using high‐resolution remote sensing images and detailed field investigations, this study provides the spatiotemporal distribution and geometry of the Neoproterozoic giant mafic dyke swarm in the southeastern Tarim Craton, which is crucial for ...
Xian‐Tao Ye   +5 more
doaj   +1 more source

Multi-stage crustal growth and cratonization of the North China Craton

open access: yesGeoscience Frontiers, 2014
AbstractThe North China Craton (NCC) has a complicated evolutionary history with multi-stage crustal growth, recording nearly all important geological events in the early geotectonic history of the Earth. Our studies propose that the NCC can be divided into six micro-blocks with >∼3.0–3.8 Ga old continental nuclei that are surrounded by Neoarchean ...
openaire   +1 more source

Thermochemical Structure of the Superior Craton and Environs: Implications for the Evolution and Preservation of Cratonic Lithosphere

open access: yesGeochemistry, Geophysics, Geosystems
The Archean Superior craton was formed by the assemblage of continental and oceanic terranes at ∼2.6 Ga. The craton is surrounded by multiple Proterozoic mobile belts, including the Paleoproterozoic Trans‐Hudson Orogen which brought together the Superior
Riddhi Dave   +3 more
doaj   +1 more source

Differential Craton Destruction Controlled by Fossil Structures in the Central North China Craton

open access: yesGeophysical Research Letters
Craton evolution plays a fundamental role in stabilizing the continental lithosphere and the long‐term evolution of Earth's surface environment. The Shanxi Rift Zone (SRZ) within the North China Craton marks an ongoing craton destruction.
Cong Ji   +4 more
doaj   +1 more source

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