Results 31 to 40 of about 90,092 (222)
Geosystems and GeoenvironmentNeogene subvolcanic sills of tholeiitic basalt from Gabal Qatrani, Faiyum Depression, NW Desert, Egypt, represent composite intrusions of monogenetic sequences that are related to Red Sea rifting.
Ezz El Din Abdel Hakim Khalaf +1 more
doaj +1 more source
Yankuang ceshi, 2020 BACKGROUND Silicate, sulfate, carbonate and other minerals can be identified by infrared reflectance spectroscopy which is a non-destructive and rapid batch method.
SHI Wei-xin +3 more
doaj +1 more source
A Calcium-in-Olivine Geohygrometer and its Application to Subduction Zone Magmatism [PDF]
Journal of Petrology, 2016 High-precision electron microprobe analyses were obtained on olivine grains from Klyuchevskoy, Shiveluch and Gorely volcanoes in the Kamchatka Arc; Irazú, Platanar and Barva volcanoes of the Central American Arc; and mid-ocean ridge basalt (MORB) from the Siqueiros Transform.
Gavrilenko M. +5 more
openaire +2 more sources
Mineral reaction and deformation in Plagioclase-Olivine composites : an experimental study [PDF]
, 2004 Deformation and metamorphism of rocks are fundamentally interrelated but the ways in which processes of reaction and deformation mutually influence each other are still poorly understood in natural rocks.
Ronde, Almar A. de
core +1 more source
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Cobalt‐Free Single‐Crystal Cathodes for Next‐Generation Lithium‐Ion Batteries
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Cobalt‐free single‐crystal cathodes enhance lithium‐ion battery stability by mitigating fracture, degradation, and phase transitions. This review highlights Ni‐rich layered, Li‐Mn‐rich, spinel, and olivine frameworks, synthesis strategies enabling morphology and defect control, and structural tuning via doping and coatings, offering pathways toward ...
Srinivasan Alagar +5 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. +3 more
core +1 more source
Geological Journal, EarlyView.Early zircon saturation and crystallisation occur in mafic (52–54 wt.% SiO2) lavas at Tengchong volcanic field. These early formed zircons with high δ18O (6.6‰–7.9‰) indicates mantle enrichment by subducted supracrustal materials. ABSTRACT Late Pleistocene (< 0.2 Ma) mafic and evolved volcanic rocks occur in northern Tengchong Volcanic Field, SE ...
Lizhu Wang, Haibo Zou
wiley +1 more source
Shear-Induced ringwoodite formation in the Martian shergottite Dar al Gani 670 [PDF]
, 2013 Shock-produced melt veins in the Martian shergottite Dar al Gani 670 crosscut large olivine crystals. The upper part of one of these crystals appears to be sheared off and displaced along the shock vein.
Fritz, Jörg +3 more
core +1 more source
Journal of Raman Spectroscopy, EarlyView.An interdisciplinary in situ study of jewelled reliquaries of the True Cross integrates gemmology and portable analytical techniques, revealing new evidence on the identification and symbolic role of peridots and other gemstones. ABSTRACT Jewelled crosses containing relics of the True Cross occupy a central position in the devotional, artistic and ...
Stefania Martiniello +2 more
wiley +1 more source