Results 91 to 100 of about 2,562 (192)

Zircon Solubility, Metamict ZrSiO4 Replacement, and Hydrothermal Zircon Formation at Upper Crustal Pressures

open access: yesGeochemistry, Geophysics, Geosystems, Volume 26, Issue 3, March 2025.
Abstract Stable and inert under most conditions, zircon can be dissolved and precipitated by aqueous fluids in the upper crust. Geochemical models using currently available thermodynamic properties for Zr aqueous species at 0.2 GPa predict that zircon solubility increases with temperature from 400 to 900°C in fluids saturated with quartz or baddeleyite.
John C. Ayers, Chen Zhu
wiley   +1 more source

New age constraints on metamorphism, metasomatism and gold mineralisation at Plutonic Gold Mine, Marymia Inlier, Western Australia [PDF]

open access: yes, 2016
The Plutonic Well Greenstone Belt (PWGB) is located in the Marymia Inlier between the Yilgarn and Pilbara cratons in Western Australia, and hosts a series of major Au deposits.
Baker, J. A.   +5 more
core   +1 more source

Assessing Thermal Gradients Across Archean Stratigraphy Using Raman Spectra of Carbonaceous Material Thermometry and Mineral Chemistry in the Western Dharwar Craton, India

open access: yesGeological Journal, Volume 60, Issue 2, Page 560-581, February 2025.
This study identifies a two‐stage metamorphism in the Western Dharwar Craton using Raman spectra of carbonaceous material (RSCM) thermometry, and analysis of metamorphic mineral chemistry. These findings are linked with the micro to regional‐scale structural evolution of the region, providing insights into how low‐grade metamorphism contributes to ...
Lakshmanan Sreehari   +7 more
wiley   +1 more source

A Clockwise P-T Path from the Variscan Basement of the Tisza Unit, Pannonian Basin, Hungary

open access: yesGeologia Croatica, 2010
The polymetamorphic basement of the Tisza Unit forms a detachedfragment of the Variscan European foreland of the Neotethyanrealm. A clockwise evolution path of a gneiss-amphibolite complexof the Tisza Unit was reconstructed, investigating the ...
Peter Arkai, Peter Horvath, Geza Nagy
doaj   +1 more source

Geothermobarometry of Sahneh, Harsin-Nourabad ultramafic rocks (NE-Kermanshah) [PDF]

open access: yesIranian Journal of Crystallography and Mineralogy, 2021
A Moradpour   +4 more
openaire   +1 more source

CO2‐Rich Xenoliths at Mt. Vulture Volcano (Southern Italy): New Constraints on the Volcano Plumbing System

open access: yesTerra Nova, Volume 37, Issue 1, Page 41-48, February 2025.
ABSTRACT This study provides new mineral chemistry data together with micro‐thermometric measurements on fluid inclusions hosted in ultramafic xenoliths (lherzolite, wehrlite, and dunite) brought to the surface by the last Mt. Vulture volcano activity (140 ka; southern Italy), and fed by melilitite‐carbonatite magmas.
Gabriele Carnevale   +9 more
wiley   +1 more source

Reported ultra-low lava viscosities from the 2021 La Palma eruption are potentially biased. [PDF]

open access: yesNat Commun, 2023
Gisbert G   +8 more
europepmc   +1 more source

Transpressive dextral shear in the Italva-Itaperuna section, Northern State of Rio de Janeiro, Brazil [PDF]

open access: yes, 2008
Structural analysis carried out on a segment of the Neoproterozoic Ribeira Belt, southeastern Brazil, show that it represents part of the transpressive dextral orogen related to the Central Mantiqueira Province.
DEHLER, Nolan M.   +2 more
core   +2 more sources

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