Results 61 to 70 of about 115,962 (208)

IGyTheM: Integrating Geodynamics With Thermodynamics Using Machine Learning

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Achieving a comprehensive understanding of mantle convection requires integrated models that couple mantle dynamics with thermodynamic properties. Although advances in computational geodynamics have substantially improved our ability to simulate the underlying physical processes, incorporating thermodynamics into self‐consistent geodynamic ...
Qian Yuan, Paul D. Asimow, Michael Gurnis, Paula Antoshechkina, Junjie Dong   +4 more
wiley   +1 more source

Mantle structure and tectonic history of SE Asia [PDF]

, 2015
Seismic travel-time tomography of the mantle under SE Asia reveals patterns of subduction-related seismic P-wave velocity anomalies that are of great value in helping to understand the region's tectonic development.
Wim Spakman, Mantle dynamics & theoretical geophysics, Hall, Robert, Spakman, Wim, Robert Hall   +4 more
core   +2 more sources

Variable Upper Mantle Geochemical Processes Constrained From Independent Component Analysis of the Fizh Massif, Northern Oman Ophiolite

Geochemistry, Geophysics, Geosystems
We statistically analyzed the whole‐rock compositions of peridotites in the Oman ophiolite using a multivariate statistical technique called independent component analysis (ICA) to better understand the processes within the ophiolitic mantle section that
Yuto Miki, Eiichi Takazawa, Kenta Ueki, Tatsu Kuwatani   +3 more
doaj   +1 more source

Mid-Cretaceous extensional magmatism in the Alborz Mountains, north Iran; geochemistry and geochronology of Gasht-Masuleh gabbros

Swiss Journal of Geosciences, 2023
In the Gasht-Masuleh area in the Alborz Mountains, gabbroic magma intruded Palaeozoic metasediments and Mesozoic sediments and crystallised as isotropic and cumulate gabbros.
Leila Rezaei, Martin J. Timmerman, Mohssen Moazzen, Uwe Altenberger, Jiří Sláma, Masafumi Sudo, Christina Günter, Franziska D. H. Wilke, Anja M. Schleicher   +8 more
doaj   +1 more source

Mantle xenoliths from Komsomolskaya kimberlite pipe, Yakutia: Multistage metasomatism

Geosystems and Geoenvironment
Minerals from > 200 mantle xenoliths from Komsomolskaya kimberlite pipe were studied by electron microprobe and LA-ICP-MS. They are metasomatised garnet and spinel peridotites containing phlogopite, amphibole and ilmenite with garnets (up to 12.5 wt ...
Igor V. Ashchepkov, Theodoros Ntaflos, Nikolai S. Medvedev, Nikolai V. Vladykin, Alla M. Logvinova, Denis S. Yudin, Hilary Downes, Igor V. Makovchuk, Ravil F. Salikhov   +8 more
doaj   +1 more source

The Dense MORB Fraction Controls the Dynamic Stability and Hydration Potential of the Mantle Transition Zone

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract The mantle transition zone (MTZ; ∼410–660 km depth) is a major reservoir of water and mid‐ocean ridge basalt (MORB)‐like materials, yet how composition and hydration regulate its physical stability remains unclear. Using geodynamical modeling, we examine the joint effect of water content and dense MORB fraction on the density, viscosity, and ...
Zhensheng Wang, Sierd Cloetingh, Alexander Koptev, Qin Wang, Alessio Lavecchia, István Kovács, Timothy Kusky   +6 more
wiley   +1 more source

Three water sites in upper mantle olivine and the role of titanium in the water weakening mechanism [PDF]

Infrared spectroscopy on synthetic olivines has established that there are at least four different mechanisms by which hydrogen is incorporated into the crystal structure.
Berry, A. J., Hermann, J., Walker, A. M., O'Neill, H. S.   +3 more
core   +1 more source

Thallium Isotopes Reveal Brine Activity During Carbonatite Magmatism

Geochemistry, Geophysics, Geosystems, 2021
Carbonatite volcanism remains poorly understood compared to silicic volcanism due to the scarcity of carbonatite volcanoes worldwide and because volcanic H2O and CO2—major components in carbonatite volcanic systems—are not well preserved in the rock ...
Forrest Horton, Sune Nielsen, Yunchao Shu, Alan Gagnon, Jerzy Blusztajn   +4 more
doaj   +1 more source

Geochemical and Geological Investigation of Skarn‐Type Pb–Zn Mineralization in Hastanetepe (Balya‐Balıkesir, Türkiye): An Approach Based on Fluid Inclusions, Sulphur Isotopes and Geochemical Data

Geological Journal, Volume 61, Issue 9, Page 2940-2957, September 2026.
Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley   +1 more source

Heterogeneous Mantle Metasomatism Controlled by Continental Subduction: Evidence From Post‐Collisional Mafic Rocks in the North Qaidam Orogen

Geochemistry, Geophysics, Geosystems
Post‐collisional mafic rocks not only record geodynamic processes at the end of the orogenic cycle but also retain various clues regarding preceding interactions between subducted slabs and mantle wedges.
Xiangyu Gao, Shengyao Yu, Yu Qi, Lintao Wang, Chuanzhi Li, Xiaocong Jiang, Xingzhou Jiang, Yang Yu   +7 more
doaj   +1 more source