Results 71 to 80 of about 36,250 (203)

Platinum group element mineralization at Musongati (Burundi) : concentration and Pd-Rh distribution in pentlandite [PDF]

, 2017
The mafic-ultramafic intrusions of the Karagwe-Ankole belt in Burundi are considered as a new potential source for platinum group elements (PGE). The intrusions have mainly been studied for their PGE potential with regard to PGE concentration, but the ...
Dewaele, Stijn, Muchez, Philippe, Paredis, Bram   +2 more
core   +1 more source

Ultramafic Melt Viscosity: A Model

Earth and Planetary Science Letters
A non-Arrhenian model for the Newtonian viscosity (η) of ultramafic melts is presented. The model predicts the viscosity of ultramafic melts as a function of temperature (T), pressure (P), H2O content and for a range of melt compositions (70 < Mg# < 100).
James K. Russell, Kai-Uwe Hess, Donald B. Dingwell   +2 more
openaire   +1 more source

The Effects of Carbonate Precipitation on the Physical Properties of Basalt

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract To avoid the negative consequences of climate change, there is an urgent need to remove carbon dioxide from the atmosphere. Carbon mineralization—the conversion of injected CO2 into stable carbonate minerals—offers a promising pathway for large‐scale, permanent geologic storage. While projects such as CarbFix have demonstrated its feasibility,
Jonathan Simpson, Matěj Peč, Hoagy O’Ghaffari, Sharath Chandra Mahavadi, Jean E. Elkhoury   +4 more
wiley   +1 more source

Ex-situ mineral carbonation: resources, process and environmental assessment (Carmex project) [PDF]

, 2013
This article presents the main results of the Carmex project (2009-2012), whose purpose was to review the feasibility of ex-situ mineral carbonation in terms of resource availability, performance of the aqueous mineral carbonation process and life cycle ...
Augé, Thierry, Bodénan, Françoise, Bonfils, Benjamin, Boukary, Aissa, Bourgeois, Florent, Chiquet, Pierre, Guyot, François, Julcour-Lebigue, Carine, Lassin, Arnault, Petiot, Charlotte, Tremosa, Joachim   +10 more
core  

Rethinking Collinearity in Self‐Organizing Maps: Evidence From Geophysical Data Classification

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract This study examines the impact of collinearity on unsupervised machine learning algorithms (UMLAs), specifically Self‐Organizing Maps (SOMs), for detecting lithological boundaries in geophysical data. Using a multi‐scale experimental framework that includes bivariate isotropic clusters, geologically complex Noddy simulations, and real‐world ...
Limin Xu, Leonardo Feltrin, Eleanor C. R. Green   +2 more
wiley   +1 more source

BADDELEYITE MINERALIZATION OF ULTRAMAFIC ROCKS FROM THE MAIN URALS COLLISIONAL SUTURE (UFALEY METAMORPHIC BLOCK, CENTRAL URALS) [PDF]

Минералогия, 2016
Baddeleyite from ultramafic rocks of the Kurta eclogite-schist megamélange (Ufaley metamorphic block, Central Urals) is studied. The zirconium mineralization is established in Ni-bearing forsterite and magnetite-forsterite rocks, which were replaced by ...
A.I. Belkovsky, A.R. Nesterov
doaj  

Reply to Comment by Hetényi and Cattin on: “Raising the Roof of the World: Intra‐Crustal Asian Mantle Supports the Himalayan‐Tibetan Orogen”

Tectonics, Volume 45, Issue 4, April 2026.
Abstract We welcome the critique of Hetényi and Cattin on Sternai et al. (2025, https://doi.org/10.1029/2025tc009057), as it brings to light evaluative issues that require clarification and offers an opportunity to articulate more clearly how our work advances understanding of Himalayan‐Tibetan geodynamics.
P. Sternai, S. Pilia, S. Ghelichkhan, P. Bouilhol, A. Menant, L. Ostorero, B. Vaes, R. Esposito, E. Garzanti, S. Cloetingh, D. R. Davies, T. Gerya   +11 more
wiley   +1 more source

Petrology, u-pb isotope age and metamorphism of nyashevo polygenic mafit-ultramafite massive (the southern urals)

Литосфера, 2017
In the article is presented data of mineralogy, petrography, geochemistry and isotope-geochronology study Nyashevo mafic-ultramafic massif in Ilmeny-Vishnevogorsk polymethamorphic shear zone. The ultramafic rocks consist of serpentine and chlorite (up to
Natal’ya M. Valizer, Artur A. Krasnobaev, Anatolii I. Rusin, Natal’ya M. Murdasova   +3 more
doaj   +2 more sources

Stored mafic/ultramafic crust and early Archean mantle depletion [PDF]

Both early and late Archean rocks from greenstone belts and felsic gneiss complexes exhibit positive epsilon(Nd) values of +1 to +5 by 3.5 Ga, demonstrating that a depleted mantle reservoir existed very early.
Chase, Clement G., Patchett, P. J.
core   +1 more source

Inference on the Nature and the Mass of Earth's Late Veneer from Noble Metals and Gases [PDF]

, 2001
Noble metals and gases are very sensitive to the late accretion to the Earth of asteroids and comets. We present mass balance arguments based on these elements that indicate that 0.7E22-2.7E22 kg of extraterrestrial bodies struck the Earth after core ...
Allègre, Alvarez, Anders, Anderson, Bar-Nun, Bar-Nun, Basaltic Volcanism Study Project, Bernard Marty, Chyba, Chyba, Chyba, Craig, Crisp, Crovisier, Dauphas, Dauphas, Dauphas, Dauphas, Deloule, Delsemme, Engrand, Feldman, Fernandez, Gaffey, Gradie, Grieve, Hildebrand, Hunten, Jagoutz, Jambon, Jessberger, Kawakita, Kerridge, Kimura, Klein, Kleine, Kokubu, Krasnopolsky, Kurat, Kyte, Lipschutz, Love, Maher, Marty, Marty, Marty, Matsuda, Mazor, McDonough, Meisel, Meisel, Michael, Mojzsis, Morbidelli, Moreira, Morgan, Mumma, Newman, Nicolas Dauphas, Owen, Owen, Ozima, Schlesinger, Schoenberg, Schopf, Shoemaker, Shoemaker, Sleep, Stern, Stern, Swindle, Swindle, Tackley, Tolstikhin, Trieloff, Valbracht, Walker, Wasson, Yamamoto, Yin, Zahnle, Zhao   +81 more
core   +2 more sources