Results 81 to 90 of about 27,724 (241)

Garnet–Clinopyroxene Double‐Layered Coronae in a Metagabbronorite From the High‐Grade Metamorphic Gföhl Unit, Moldanubian Zone

Journal of Metamorphic Geology, Volume 44, Issue 4, Page 311-336, May 2026.
ABSTRACT This study investigates garnet–clinopyroxene double‐layered coronae in a metagabbronorite from the high‐grade metamorphic Gföhl Unit (Bohemian Massif). The coronae formed at the interfaces between relic magmatic orthopyroxene, still preserved in the cores of the coronae, and the plagioclase‐rich rock matrix.
Rene Asenbaum, Tereza Nemeškalová, Martin Racek, Vojtěch Janoušek, Julian Portenkirchner, Rainer Abart   +5 more
wiley   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, Volume 28, Issue 8, 22 April 2026.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Petrogenesis of Tarq-Mazdeh volcanic rocks based on clinopyroxene chemistry (South of Natanz, Urumieh Dokhtar volcanic belt)

Journal of Economic Geology, 2019
Introduction Clinopyroxene is one of the most common of the rock forming minerals. Its long formation period (from the earliest crystallization of magma in the core of phenocrysts to the final microcrystalline crystallization in the rock background) can
Marzieh Ghadirpour, Jamshid Ahmadian, Shahzad Sherafat, Mohammad Ali Mackizadeh   +3 more
doaj   +1 more source

The Terceira Rift, Azores: a melt inclusion study of submarine lavas [PDF]

, 2012
The Azores plateau, a bathymetric high, is seated on an anomalous mantle domain located in the Azores Triple Junction where the American, EUR and AFR lithospheric plates meet.
Conceição, Patrícia, Lourenço, Nuno, Madureira, Pedro, Marques, Filipa, Rosa, Carlos, Scott, Steve   +5 more
core  

Strumble-Preseli ancient communities and environment study (SPACES); Sixth report 2007-08 [PDF]

, 2009
This paper reports the results of field surveys and geophysical surveys in the eastern Preseli Hills of Pembrokeshire, Wales, together with petrological descriptions of rock samples taken from key outcrops and quarry ...
Armstrong, Kayt, Darvill, Timothy, Ixer, R.A., Wainwright, Geoff   +3 more
core  

Ultramafic xenoliths from the Bearpaw Mountains, Montana, USA: evidence for multiple metasomatic events in the lithospheric mantle beneath the Wyoming craton [PDF]

, 2004
Ultramafic xenoliths in Eocene minettes of the Bearpaw Mountains volcanic field (Montana, USA), derived from the lower lithosphere of the Wyoming craton, can be divided based on textural criteria into tectonite and cumulate groups. The tectonites consist
Abidin, M.S.Z., Codemard, C.A., Dupriez, P., Farrell, C., Jeong, Y., Ji, J., Maran, J.-N., Nilsson, J., Payne, D.N., Richardson, D.J., Sahu, J.K., Yoo, S.   +11 more
core   +2 more sources

Mott–Schottky Analysis of Archaeological Etruscan Pottery

Electroanalysis, Volume 38, Issue 4, April 2026.
Mott–Schottky plots of the inverse of the square of capacitance versus applied potential is used to study archaeological pottery from the Etruscan site of Pyrgi in Santa Severa (Rome, Italy). The application of Mott–Schottky (MS) analysis to electrochemical impedance data recorded for microparticulate deposits of archaeological ceramic materials is ...
Susanna Milana, Caterina De Vito, Laura Maria Michetti, Alessandro Conti, Paolo Ballirano, María Teresa Doménech‐Carbó, Natalia Ruiz, Antonio Doménech‐Carbó   +7 more
wiley   +1 more source

Negative Frictional Healing in Icelandic Geothermal (IDDP‐2) Core Samples: Potential Implications for Detachment‐Fault Mechanics

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract Detachment faults in mid‐ocean ridge settings accommodate tectonic extension. These faults are potentially weakened by alteration through phyllosilicate‐ and amphibole‐mineral formation. Seven core samples taken from the Krafla and Reykjanes geothermal fields in Iceland allow for the study of the effect of mineral alteration on the frictional ...
Barnaby Fryer, Florian Jermann, Patricia Patrier, Bruno Lanson, Stanislav Jelavic, Simon Guérin‐Marthe, Gabriel Meyer, Fabrice Barou, Marie Violay   +8 more
wiley   +1 more source

Formation of Early Water Oceans on Rocky Planets [PDF]

, 2010
Terrestrial planets, with silicate mantles and metallic cores, are likely to obtain water and carbon compounds during accretion. Here I examine the conditions that allow early formation of a surface water ocean (simultaneous with cooling to clement ...
Elkins-Tanton, Linda T.
core   +2 more sources

Validating Thermodynamic Models of Arc‐Magma Differentiation and Training Neural Networks for Rapid Thermodynamic Property Inference

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract Magmatic systems are the products of the migration and storage of compositionally evolving magmas within the solid crust. Direct computation of thermodynamic properties during magma transport remains a major challenge in multiphase‐transport modeling due to its computational cost.
Lorenzo G. Candioti, Chetan L. Nathwani, Cyril Chelle‐Michou   +2 more
wiley   +1 more source