Results 11 to 20 of about 16,196 (284)

Permian Large Igneous Provinces and Their Paleoenvironmental Effects

open access: yesGeophysical Monograph Series, Page 417-434., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jun Chen, Yi‐Gang Xu
wiley  

+5 more sources

Spin Transition of Iron in Deep‐Mantle Ferromagnesite

open access: yesGeophysical Monograph Series, Page 115-125., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Jiachao Liu, Suyu Fu, Jung‐Fu Lin
wiley  

+7 more sources

Seismotectonics of Mongolia and Baikal Rift Zone Controlled by Lithospheric Structures

open access: yesGeophysical Research Letters, 2022
Active tectonics are developing in Mongolia and the Baikal rift zone, where large crustal earthquakes (Mw ≥ 6.0) occur frequently. To clarify the mechanism of these earthquakes, we determine a high‐resolution 3‐D P‐wave velocity model of the crust and ...
Zhouchuan Huang, Dapeng Zhao
doaj   +1 more source

Evidence of Segmentation in the Iberia–Africa Plate Boundary: A Jurassic Heritage?

open access: yesGeosciences, 2019
The present structure of the Iberia−Africa plate boundary between the Gorringe Bank and the Algerian Basin is characterized by a highly segmented geometry and diffused seismicity. Filtered Bouguer gravity data show conspicuous highs coinciding with
Manel Fernàndez   +4 more
doaj   +1 more source

THE GLOBAL ENDODRAINAGE SYSTEM: SOME FLUID-PHYSICAL MECHANISMS OF GEODYNAMIC PROCESSES

open access: yesГеодинамика и тектонофизика, 2019
The article presents the main results of more than forty-year studies of the hydrogeodeformation field. We have establish some new properties of lithospheric massifs, which are clearly detectable during the periods of fast geodynamic activation (FGeDA ...
G. S. Vartanyan
doaj   +1 more source

ULF Pre-Seismic Geomagnetic Anomalous Signal Related to Mw8.1 Offshore Chiapas Earthquake, Mexico on 8 September 2017

open access: yesEntropy, 2019
In the last decade, the real time ground–based geomagnetic observations realized in correlation with the Vrancea seismicity in Romania, together with supplementary studies related to some earthquakes (Mw9.0 Tohoku, Japan on 11 March 2011 and Mw8.3 ...
Dragoș Armand Stănică   +1 more
doaj   +1 more source

Sensitivities of surface wave velocities to the medium parameters in a radially anisotropic spherical Earth and inversion strategies

open access: yesAnnals of Geophysics, 2015
Sensitivity kernels or partial derivatives of phase velocity (c) and group velocity (U) with respect to medium parameters are useful to interpret a given set of observed surface wave velocity data.
Sankar N. Bhattacharya
doaj   +1 more source

Analog and Numerical Experiments of Double Subduction Systems With Opposite Polarity in Adjacent Segments

open access: yesGeochemistry, Geophysics, Geosystems, 2020
In this work we study the dynamics of double subduction systems with opposite polarity in adjacent segments. A combined approach of numerical and analog experiments allows us to compare results and exploit the strengths of both methodologies.
Mireia Peral   +6 more
doaj   +1 more source

GEODYNAMICS OF URANIUM ORE FIELDS IN THE WESTERN PART OF THE INHUL MEGABLOK OF THE UKRAINIAN SHIELD

open access: yesГеохімія техногенезу, 2021
The Ingul megablock of the Ukrainian Shield contains a number of endogenous deposits of the sodium-uranium formation, which have been developed for more than 55-60 years.
V. Verkhovsev,   +5 more
doaj   +1 more source

Are There One or More Geophysical Coupling Mechanisms before Earthquakes? The Case Study of Lushan (China) 2013

open access: yesRemote Sensing, 2023
Several possible lithosphere–atmosphere–ionosphere coupling mechanisms before earthquake occurrence are presented in the literature. They are described by several models with different interaction channels (e.g., electromagnetic, mechanics, chemical ...
Yiqun Zhang   +10 more
doaj   +1 more source

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