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Radium depletion and 210Pb/226Ra disequilibrium of Marítaro hydrothermal deposits, Los Azufres geothermal field, Mexico
hydrothermal deposits 210Pb 226Ra radium adsorption Los Azufres
2017/4/11
In order to calculate the chronology of hydrothermal deposits precipitated from hot springs at Marítaro, Los Azufres
geothermal field, Mexico, their 224Ra, 226Ra, 228Ra and 210Pb activities were meas...
Field Investigation and Wind-Environment Numerical Simulation of Cable-Stayed Bridge Site in the West Midlands Region
Cable-Stayed Bridge Field Investigation Numerical Simulation West Midlands Region Wind Environment
2011/12/16
The area of mountain ridge accounts for the most part of our country land. With the development of economic construction, more and more long span bridges have been built in the mountainous region of t...
Dynamic Response of High Steep Rock Slopes Based on Wenchuan Near-Field Seismic Motion Characteristics
Dynamic Response Features High Steep Rock Slope Seismic Force Wenchuan Earthquake
2011/12/20
Near-field seismic motion characteristics are analyzed in accordance with records of the 2008 Ms8.0 Wenchuan Earthquake measured at Wolong Station, upon which the determination of seismic load is intr...
Field, Petrographic and Geochemical Features of the Baranadağ Quartz Monzonite of the Central Anatolian Granitoids, Turkey
Baranadağ quartz monzonite Central Anatolian Crystalline Complex Hybrid-type granitoids Post-collisional granites
2009/7/8
The Baranadağ quartz monzonite is one of the granitioid intrusions of the Central Anatolian Crystalline Complex (CACC) which represents the passive continental margin of the Anatolide-Tauride pl...
Effects of Clay Fraction and Temperature on the H2O Self-Diffusivity in Hectorite Gel: A Pulsed-Field-Gradient Spin-Echo Nuclear Magnetic Resonance Study
Complexity of Pore Structure Hectorite H2O NMR Self-Diffusion
2011/12/6
Abstract: Self-diffusion coefficients of H2O molecules in Na-rich hectorite gel were measured by 1H nuclear magnetic resonance (NMR). Spin-echo pulse sequences with magnetic field gradient pulses for ...
Clay Diagenesis in the Sandstone Reservoir of the Ellon Field (Alwyn, North Sea)
Calcite Diagenesis Dickite Illite Kaolinite North Sea Pressure-Solution Sandstone
2011/12/7
Abstract: The nature, composition, and relative abundance of clay minerals in the sandstones of the Brent Group reservoir were studied between 3200–3300 m in a well of the Ellon Field (Alwyn area, Nor...
Diffuse Reflectance Spectra of Al Substituted Goethite: A Ligand Field Approach
Band Decomposition Bond Distances Diffuse Reflectance Spectroscopy Goethite Ligand Field Splitting Racah-Parameters
2011/12/6
Abstract: Previous investigations of goethite revealed a substantial variation of color and diffuse reflectance spectra (DRS) in the extended visible range (350–2200 nm). To better understand the caus...
Lattice-dynamical evaluation of thermodynamic properties and atomic displacement parameters for beryl using a transferable empirical force field
Lattice-dynamical thermodynamic properties atomic displacement parameters beryl transferable empirical force field
2012/4/6
Usingempiricalpotentialsderivedfrom?ttingthevibrationalfrequenciesofagroupofsilicatesandoxides,andcrystallographicinformation,aBorn-vonKarmanrigid-ionlattice-
dynamicalmodelhasbeenappliedtothewholeBr...
Ab initio calculation of electric-field--gradient tensors of forsterite
Ab initio calculation electric-field--gradient tensors forsterite
2012/4/5
Abinitio band-structure calculations based on the density functional theory have been performed for forsterite to obtain, witha parameter-free model, electric-field gradients for all nuclei. Calculati...
Structure and crystal field spectra of Co3Al2(SiO4)3 and (Mg, Ni)3Al2(SiO4)3 garnet
Structure crystal field spectra Co3Al2(SiO4)3 (Mg, Ni)3Al2(SiO4)3 garnet
2012/4/5
Synthetic C03A12(Si04)3garnet and (Mg,Ni)3A12(Si04)3 garnet with Ni/(Ni + Mg)= 0.15-0.18 have been studied by single-crystal X-ray diffraction and optical spectroscopy. The X-ray data confirm that COH...
Mechanism of Illitization of Bentonites in the Geothermal Field of Milos Island Greece: Evidence Based on Mineralogy, Chemistry, Particle Thickness and Morphology
Bentonite Hydrothermal alteration Illitization Illite/smectite Kaolinite Neoformation Ostwald ripening Solid state transformation
2011/12/28
Hydrothermal alteration has caused illitization along a 40m vertical profile in the Tsantilis bentonite deposit, Eastern Milos, Greece which consists principally of a Wyoming-type montmorillonite and ...
Crystal Chemistry of Hydrous Iron Silicate Scale Deposits at the Salton Sea Geothermal Field
Crystal chemistry EXAFS Ferrihydrite Hisingerite Hydrous iron silicate Mossbauer NMR
2011/12/28
The crystal chemistry of Fe-Si scales deposited from geothermal brines at Salton Sea, California, was studied by powder X-ray diffraction and spectroscopic techniques including infrared, 57Fe M鰏sbauer...
Mixed-Layer Clay Geothermometry in the Wairakei Geothermal Field, New Zealand
Geothermal system Hydrothermal alteration Mixed-layer clays Reservoir permeability
2012/1/4
Mixed-layer clays of variable composition and structure occur in core samples from two drillholes (WK207 and WK210) drilled into the Te Mihi sector of the Wairakei geothermal field. These were identif...
Kaolinite Synthesis. I. Crystallization Conditions at Low Temperatures and Calculation of Thermodynamic Equilibria. Application to Laboratory and Field Observations
Aluminum Hydroxide Kaolinite Synthesis Thermodynamic
2012/2/10
The equilibrium diagrams developed for Al-hydroxide and for kaolinite by Garrels and Christ (1965) have been modified by taking into account the existence of gels. From the stability zones obtained, t...
Scan Electron Micrographs of Kaolins Collected from Diverse Environments of Origin—V. Kaolins Collected in Australia and Japan on Field Trips of the Sixth and Seventh Clay Conferences
Scan Electron Micrographs Kaolins Diverse Environments Seventh Clay Conferences
2012/2/13
Scan electron micrographs are shown of the textures of flint clays, tonsteins, kaolin associated with combustion-metamorphism, sedimentary kaolin, and dickite from the Sydney Basin of Australia. The t...