Results 31 to 40 of about 292 (179)

Generation of Channelized Mantle Flow Beyond the Rift Zone Accelerated by Thermal Heterogeneity and Rift Propagation

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Rifting is a tectonic process that leads to extensive magmatic activity, continental breakup, and the formation of new oceanic crust. The interplay between rifting and dynamic mantle flow driven by thermal heterogeneity in the mantle along the rift‐axis can influence magmatism and deformation beyond the rift zone.
Min‐Seok Jang, Byung‐Dal So
wiley   +1 more source

Depositional and stratigraphic evolution of a Permian megalake system: Implications for seiche‐influenced models

open access: yesThe Depositional Record, Volume 12, Issue 2, April 2026.
During the Late Permian, the rise of the Gondwanides Belt trapped marine waters, giving birth to a vast megalake. This lake shifted between overfilled, balanced‐fill and underfilled stages that are recorded by high‐frequency accommodation changes, while meteorological seiches shaped the sedimentary dynamic and produced heterolithic beds.
B. Christofoletti   +6 more
wiley   +1 more source

THE FIRST RESULTS OF STUDIES OF TEMPORARY VARIATIONS IN SOILRADON ACTIVITY OF FAULTS IN WESTERN PRIBAIKALIE

open access: yesГеодинамика и тектонофизика, 2015
Radon concentrations in soil air are variable depending on factors that are considered external (planetary) and internal (geodynamic) relative to the Earth. In active fault zones, variations of gas emanations are most intense.
К. Zh. Seminsky, А. А. Bobrov
doaj   +1 more source

Asthenospheric flow and origin of volcanism in the Baikal Rift area [PDF]

open access: yesEarth and Planetary Science Letters, 2006
The origin of low-volume, hotspot-like volcanism often observed in continental rift areas is debated, as is the nature of the flow in the mantle beneath. In this paper we assemble seismic constraints on the mantle flow below the Baikal Rift Zone. We combine new evidence from upper-mantle tomography and from a radially anisotropic shear-velocity profile
Lebedev, S.   +2 more
openaire   +3 more sources

Fault Friction, Plate Rheology, and Mantle Torques From a Global Dynamic Model of Neotectonics

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Improvements in software, parallel computing, global data sets, and laboratory flow‐laws help to develop the global Earth5 thin‐shell finite‐element model of Bird et al. (2008, https://doi.org/10.1029/2007jb005460) into a benchmark study. All experiments confirm that modeled faults (other than megathrusts) have low effective friction of 0.085 ±
Peter Bird   +2 more
wiley   +1 more source

Testing Models for Upper Mantle Earthquakes in the Tanganyika‐Rukwa Rift, Africa

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Rifts that initiate in mechanically strong, stable continental lithosphere are characterized by M > 5 earthquakes at depths >35 km near or below the crust mantle interface. Current models for deep rift zone earthquakes invoke elevated pore pressures associated with magmatism, and rapid stressing from magma intrusions.
Eduardo Arzabala   +4 more
wiley   +1 more source

SEISMOGEOLOGICAL, SEISMOLOGICAL AND ENGINEERING SEISMOLOGICAL STUDIES OF THE LABORATORY OF ENGINEERING SEISMOLOGY AND SEISMOGEOLOGY OF IEC RAS

open access: yesГеодинамика и тектонофизика, 2015
The article presents recent results of seismogeological, seismological and engineering seismological studies conducted by the Laboratory. Specific features of seismicity in regions of Russia are reviewed.
V. I. Dzhurik
doaj   +1 more source

First experience of seismodeformation monitoring of Baikal rift zone (by the example of South-Baikal earthquake of 27 August 2008) [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2010
A novel method of data processing – a structural functions curvature analysis method – was applied to the time series of seismodeformation monitoring of Baikal rift zone from April to November 2008, revealing the unique features of monitoring variable ...
G. V. Vstovsky, S. A. Bornyakov
doaj   +1 more source

Introduction to the Special Collection Through the Arctic Lens: Progress in Understanding the Arctic Ocean, Margins, and Landmasses

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract The 9th International Conference on Arctic Margins, held in Ottawa, Canada, from 13–15 June 2022, convened under the theme Through the Arctic Lens, drawing renewed attention to the scientific, logistical, and environmental challenges inherent to geoscience research in the Arctic. This Special Collection presents a suite of studies spanning the
Marie‐Claude Williamson
wiley   +1 more source

THE CENOZOIC GRABEN IN THE MARGINAL SUTURE ZONE OF THE SIBERIAN CRATON: INTERIOR STRUCTURAL FEATURES AND TECTONIC STRESS RECONSTRUCTIONS

open access: yesГеодинамика и тектонофизика
Marginal suture zones of ancient platforms are deep-seated fault zones separating the craton from the mobile belt. Of particular interest is the Pribaikalian marginal suture of the Siberian craton, activated during the Cenozoic rifting.
A. V. Cheremnykh   +6 more
doaj   +1 more source

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