Results 71 to 80 of about 4,906 (222)

Cretaceous Spatiotemporal Variations in Tectonic Shortening Directions in the Longmen Shan Tectonic Belt and Geodynamic Implications: Constraints From AMS Fabrics and Crustal Rotation in the Western Sichuan Basin

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract As a major tectonic boundary along the eastern margin of the Tibetan Plateau, the Longmen Shan tectonic belt (LMSTB) underwent pronounced crustal shortening and thickening during the Cretaceous. However, the spatiotemporal evolution of Cretaceous shortening and the boundary's response to far‐field tectonic forcing remain incompletely resolved.
Lifu Hou, Lilin Lan, Zaizheng Zhou, Yuhang Cai, Qiwen Zhong, Fujun Liu, Zhen Yu, Yabo Tong, Junling Pei   +8 more
wiley   +1 more source

High‐Resolution Anisian Marine Perturbation by Volcanism in the Eastern Paleo‐Tethys

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Following the end‐Permian mass extinction, the Middle Triassic Anisian Stage was still characterized by environmental perturbations that hindered biological flourishing, yet it remains uncertain whether these persistent Tethyan disturbances were coupled with the closure of the Paleo‐Tethys Ocean.
Zhenyang Lai, Danxin Li, Yonggang Yan, Qian Zhao, Enxiong Zhou, Yalan Fu, Xiaotai Deng, Thanakan Anchana, Apivut Veeravinantanakul, Punya Charusiri, Weitao Wang, Baochun Huang, Peizhen Zhang   +12 more
wiley   +1 more source

Role of Volcano‐Tectonic Interactions During Early‐Phase Magma‐Assisted Continental Rifting

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract We study volcanic‐tectonic interactions during the early phase of rifting in the Natron Rift, a magmatic segment of the East African Rift System. We use the open‐source crustal deformation modeling code, PyLith, to model deflation during the 2007–2008 explosive eruptions and inflation during 2016–2023.
Ntambila Daud, D. Sarah Stamps, Brad T. Aagaard, Maurizio Battaglia, Elifuraha Saria, Kang‐Hyeun Ji   +5 more
wiley   +1 more source

Insights on Lightning‐Induced Remanent Magnetization From High‐Current Impulse Experiments

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract Lightning strikes generate intense transient magnetic fields capable of inducing strong and complex remanent magnetizations in rocks, potentially overprinting their original paleomagnetic record. To investigate the mechanisms and outcomes of lightning‐induced remanent magnetization, we conducted controlled high‐current impulse experiments on ...
M. De Andrade Nunes, R. I. F. Trindade, J. Salminen, R. I. Albrecht, A. Silva Neto, G. G. C. Pimentel   +5 more
wiley   +1 more source

Robustness of characteristics of the Matuyama-Brunhes geomagnetic field reversal found in global models

Frontiers in Earth Science
Paleomagnetic data enables the global reconstruction of the geomagnetic field, allowing the investigation of significant events like polarity reversals and excursions.
Ahmed Nasser Mahgoub, Ahmed Nasser Mahgoub, Monika Korte, Sanja Panovska, Maximilian Schanner   +4 more
doaj   +1 more source

Quickly erupted volcanic sections of the Steens Basalt, Columbia River Basalt Group: Secular variation, tectonic rotation, and the Steens Mountain reversal

Geochemistry, Geophysics, Geosystems, 2008
The Steens Basalt, now considered part of the Columbia River Basalt Group (CRBG), contains the earliest eruptions of this magmatic episode. Lava flows of the Steens Basalt cover about 50,000 km2 of the Oregon Plateau in sections up to 1000 m thick.
Nicholas A. Jarboe, Robert S. Coe, Paul R. Renne, Jonathan M. G. Glen, Edward A. Mankinen   +4 more
doaj   +1 more source

Slow True Polar Wander Around Varying Equatorial Axes Since 320 Ma

AGU Advances
True polar wander (TPW), the rotation of the solid Earth relative to the spin axis, is driven by changes in the Earth's moment of inertia induced by mantle convection and may have influenced past climate and life. Long‐term TPW is typically inferred from
Bram Vaes, Douwe J. J. vanHinsbergen
doaj   +1 more source

A New View of Long-Term Geomagnetic Field Secular Variation

Frontiers in Earth Science, 2018
This study carries out a statistical analysis of high-resolution PSV records for the last ~70 ka from three different regions of the Earth. We consider directional and intensity variability in each region on time scales of 103-105 years in order to ...
Steve P. Lund
doaj   +1 more source

PALEOMAGNETISM OF SILURIAN AND DEVONIAN VOLCANICS FROM THE CHINGIZ ISLAND ARC, KAZAKHSTAN, AND ITS BEARING ON TECTONIC EVOLUTION OF THE URAL-MONGOL BELT

Геодинамика и тектонофизика, 2015
The tectonic and paleogeographic evolution of the Ural-Mongol belt between the cratons of Baltica, Siberia, and Tarim is the key to the formation of the Eurasian supercontinent during Paleozoic time, but the views on this complicated process remain very ...
Natalia M. Levashova, Mikhail L. Bazhenov, Rob Van der Voo, Alexandra V. Abrajevitch   +3 more
doaj   +1 more source

PETRO- AND PALEOMAGNETIC STUDIES OF BASALTS OF THE UPPER DEVONIAN APPAINSKAYA SUITE (WESTERN YAKUTIA)

Геодинамика и тектонофизика, 2016
Introduction. One of the main tasks of paleomagnetic studies is to obtain a framework of reference poles for calculating the kinematic characteristics of lithospheric taxones as a basis for geodynamic reconstructions.
К. M. Konstantinov, М. D. Tomshin, Sh. Z. Ibragimov, М. Z. Khuzin, I. K. Konstantinov, A. A. Yakovlev, E. V. Artemova   +6 more
doaj   +1 more source