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Distribution of Clay Mining and Quarries in South Africa
Distribution Clay Mining Quarries South Africa
2012/3/14
Distribution of Clay Mining and Quarries in South Africa.
Diagenetic clay mineral distribution in Mesoproterozoic sandstones of the Cariewerloo Basin, South Australia – implications for uranium mobilisation
Diagenetic clay mineral distribution Mesoproterozoic sandstones the Cariewerloo Basin implications uranium mobilisation
2012/3/30
A thick sequence of largely undeformed red-bed sandstones of Mesoproterozoic age, collectively termed the Pandurra Formation, overlies a wide area of crystalline basement of the central and eastern Ga...
Study on Diameter Distribution of Natural Secondary Forest
Average Diameter at Breast Height Diameter Distribution Secondary Forest Stand Description Factor
2011/12/21
This study used 45 permanent sample plots investigated in 2007 and 6 permanent sample plots investigated in 2008 in Mao’er Mountain natural secondary forest area and 68 permanent plots investigated in...
Influences of Horizontal Initial Stress and Slope Angle on Stress Distribution in Mountains and Cavern Stability
Damage-Fracture Model Initial Lateral Stress Numerical Simulation Slope Angle Stability of Surrounding Rock
2011/12/16
Inbetween the many factors, which will influence the distribution character of initial stress in a mountain, different angle of mountain slopes and horizontal geostress will have important effects on ...
Octahedral cation distribution in palygorskite
Palygorskite Fe-rich Mg-rich structure near infrared spectroscopy trioctahedral
2011/11/14
The OH speciation of 18 palygorskite samples from various localities were evaluated by near infrared spectroscopy (NIR) and compared to the corresponding octahedral composition derived from independen...
Distribution, lithology and provenance of peridesert loess deposits in northeastern Iran
Silty deposits Loess Quartz microtexture Loess provenance Iran
2011/11/11
Silty deposits cover different landforms bordering the city of Mashhad in NE-Iran. Despite the potential of these deposits to provide important information regarding landscape evolution as well as lan...
Genesis and distribution of palygorskite and associated clay minerals in soils and sediments of southern Mashhad
Palygorskite Loess Clay minerals Paleoclimate Granite
2011/11/7
The occurrence of palygorskite and its formation conditions in soils and sediments were studied along a transect covering granitic hilly lands to marly hilly lands in southern Mashhad. Based on format...
Genesis and distribution of palygorslkite and associated clay minerals in soils and sediments of southern Mashhad
Palygorskite Loess:Clay minerals Paleoclimate Granite
2011/11/7
The occurrence of palygorskite and its formation conditions in soils and sediments were studied along a transect covering granitic hilly lands to marly hilly lands in southern Mashhad. Based on format...
Distribution and Origin of Clay Minerals in Konya Neogene Sedimentary Basin, Central Anatolia, Turkey
clay minerals Konya lacustrine environment Neogene Turkey
2011/11/10
Abstract: Neogene sediments having both fluvial and lacustrine characteristics are widespread in the Konya region of central Anatolia. The fluvial units are typically green in colour and thick at the ...
Trace element distribution among rock-forming minerals in Black Hills migmatites, South Dakota: A case for solid-state equilibrium
rock-forming minerals Black Hills migmatites solid-state equilibrium South Dakota
2012/3/31
Proterozoic migmatites in the Black Hills, South Dakota, were examined to determine if parti-
tioning of trace elements hosted by rock-forming minerals between melanosomes and leucosomes
preserves r...
Local Ca-Mg distribution of Mg-rich pyrope-grossular garnets synthesized at different temperatures revealed by 29Si MAS NMR spectroscopy
Local Ca-Mg distribution Mg-rich pyrope-grossular garnets synthesized different temperatures revealed 29Si MAS NMR spectroscopy
2012/4/1
Pyrope-grossular solid solutions, (Mg,Ca) Al Si O , of composition Py Gr and Py Gr were3 2 3 12 85 15 75 25
synthesized at 1000, 1200, and 1400 ?C and 30 kbars in a piston-cylinder device. The synt...
Monte Carlo Simulation of the Total Radial Distribution Function for Interlayer Water in Sodium and Potassium Montmorillonites
Adsorbed Water Montmorillonite Neutron Diffraction Water
2011/12/7
Abstract: Monte Carlo simulations based on tested water-water, cation-water, and water-clay potential functions were applied to calculate radial distribution functions for O-O, O-H and H-H spatial cor...
XRD Measurement of Mean Thickness, Thickness Distribution and Strain for Illite and Illite-Smectite Crystallites by the Bertaut-Warren-Averbach Technique
Crystallite Fundamental Illite Particles Illite Illite-Smectite MacEwan Crystallites Mixed-Layer Clay Thickness Distributions Warren-Averbach Method
2011/12/2
Abstract: A modified version of the Bertaut-Warren-Averbach (BWA) technique (Bertaut 1949, 1950; Warren and Averbach 1950) has been developed to measure coherent scattering domain (CSD) sizes and stra...
The temperature dependence of the cation distribution in synthetic hercynite (FeAl2O4) from the in-situ neutron structure refinements
temperature dependence cation distribution synthetic hercynite (FeAl2O4) in-situ neutron structure refinements
2012/4/1
The temperature dependence of the cation distribution in synthetic hercynite (FeAl2O4) has been determined using in-situ time-of-flight neutron powder diffraction. The sample was synthesized from the ...
Distribution of cations and vacancies and the structure of defects in oxidized intermediate olivine by atomic-resolution TEM and image simulation
Distribution of cations vacancies atomic-resolution TEM image simulation
2012/4/1
The Fe, Mg, and vacancy distributions in oxidized olivine of intermediate composition and the crystal structures of associated planar defects were examined by a combination of atomic-resolution transm...