Results 71 to 80 of about 1,312 (211)

Fluid‐Induced Magnetic Enhancement in Sandstone Friction Experiments: Implications for Coseismic Fault Temperature Estimates

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Constraining peak temperature during seismic slip is essential for quantifying earthquake energy budgets and fault weakening. Rock magnetic methods provide a sensitive means of estimating shear‐induced coseismic temperature rise; however, the role of fluids in friction‐induced magnetic alterations remains poorly constrained.
Qiang Fu, Mark J. Dekkers, Simo Spassov, Derya Gürer, Chien‐Cheng Hung, Job P. B. Arts, André R. Niemeijer   +6 more
wiley   +1 more source

Hydrothermal alteration of eudialyte-hosted critical metal deposits : fluid source and implications for deposit grade [PDF]

, 2019
MV, AB and AF were funded by the NERC-funded SOS RARE consortium, grant number NE/M010856/1.Eudialyte-hosted critical metal deposits potentially represent major sources of rare earth elements (REE), zirconium and niobium.
Davies, Gareth R., Finch, Adrian A., Emma Hunt, Borst, Anouk M., Davies, Gareth R.; id_orcid, Hunt, Emma J., van de Ven, Mathijs A.J., Mathijs van de Ven, Adrian Finch, Gareth Davies, Anouk Borst   +10 more
core   +1 more source

Integrated Geophysical Imaging Reveals the Origin and Pathways of Mantle‐Derived CO2 Beneath the Tangra Yumco Rift, Central Tibet

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The Tangra Yumco Rift (TYR) in central Tibet is a key window for crust–mantle interactions during extension. We performed high‐resolution crust‐mantle imaging using receiver function analysis, 1‐D nonlinear S‐wave velocity inversion, and tomoDD tomography, revealing a vertical Crust–Mantle Degassing System (CMDS) bounded by the Zhala (ZF) and ...
Zongxu Li, Rizheng He, Hanhan Tang, Qiang Xu, Lei Gao, Yulan Li, Lihui Tan, Xiao Niu, Ruo Jia   +8 more
wiley   +1 more source

Study on the mechanism of remote sensing anomaly extraction and correlation analysis of ore controlling: Take the Qimantag metallogenic belt of Qinghai as an example

矿业科学学报, 2017
Information extraction from remote sensing and the research of ore controlling factors has been in the two aspects isolated corrosion, the relationship between remote sensing anomaly extraction and deposit metasomatic alteration in the theory system has ...
Tang Chao, Shao Longyi
doaj  

Composition and Structure of Zircon from Hydrothermal Uranium Occurrences of the Litsa Ore Area (Kola Region, Russia)

Geosciences, 2020
Zircon grains from various metagranitoids (plagio- and monzo-granites, gneisses, metasomatic rocks, and pegmatoid veins) from the Skal’noe and Dikoe sites of the Litsa uranium ore area (Kola Region, Russia) were studied in order to reconstruct the ...
Tatiana Kaulina, Lyudmila Lyalina, Vadim Kamenetsky, Vadim Il’chenko, Vladimir Bocharov, Maria Gannibal   +5 more
doaj   +1 more source

Progressively Fenitised Schist and Carbonatitic Clasts From a Metasomatic Aureole Beneath the Alkalic Dunedin Volcano, Otago, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
Clasts of albite‐porphyroblastic quartzofeldspathic schist, derived from the Otago Schist basement, occur within the Port Chalmers Breccia, a diatreme at the centre of the Dunedin stratovolcano, New Zealand. Schists have undergone varying degrees of replacement reactions (at temperatures of 300° to >500°C) producing hornfelses, with Ca‐ and K‐enriched ...
Alan F. Cooper
wiley   +1 more source

Alteration of amphiboles in ryodacitic porphyries from Zalas near Kraków (S Poland) [PDF]

, 2009
The study was aimed at alteration of amphibole phenocrysts in the porphyries from Zalas. The alteration processes took place at the magmatic stage: development of orthopyroxenes and biotitization, and at the postmagmatic one: chloritization followed by ...
Czerny, J., Marszałek, M.
core  

Metasomatic Mineral Systems with IOA, IOCG, and Affiliated Critical and Precious Metal Deposits: A Review from a Field Geology Perspective [PDF]

Worldwide, a growing list of critical (Bi, Co, Cu, F, Fe, Mo, Ni, P, PGE, REE, W, U, and Zn) and precious metal (Ag and Au) resources have been identified in mineral systems forming Fe-oxide-copper-gold (IOCG) deposits; Fe-oxide-apatite (IOA); Fe-sulfide
Louise Corriveau, Jean-François Montreuil   +1 more
core   +1 more source

Study on the Mineralogical Characteristics of Cinnabar Jade by X-ray Powder Diffraction-Laser Raman Spectroscopy-Electron Probe from Xunyang, Shan'xi Province

Yankuang ceshi, 2014
In recent years, due to the similar appearance of Chicken-blood stone, red cinnabar jade has been a research concern of mineral composition, lithology and other related aspects in Jilin, Guizhou, Qinghai and other places.
WANG Yi, CHANG Na, LIU Ya-fei, ZHAO Hui-bo, LIU San   +4 more
doaj   +2 more sources

Magmatic significance and hydrothermal alteration of layered chromitites from the Bracco Gabbro Complex, Ligurian Ophiolites, Italy

Bulletin of the Mineral Research and Exploration
The Bracco chromitites are hosted in the Mesozoic Ligurian Ophiolites (Italy) and provide key insights into the magmatic and post-magmatic (i.e. metamorphic and hydrothermal) evolution ofgabbro-hosted chromitites in an oceanic mantle.
Federica Zaccarini, Raphael J. Baumgartner, Constantinos Mavrogonatos, Giorgio Garuti   +3 more
doaj   +1 more source